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BTS441TGATMA1 - 17A 24V Smart High-Side Switch | Infineon PROFET
The Infineon BTS441TGATMA1 is a single-channel 17 A high-side power switch with an integrated vertical N-channel power FET, housed in a PG-TO263-5-2 (DPAK-5) surface-mount package. Built on Infineon's Classic PROFET family, it provides embedded protection and diagnostic functions for harsh 12 V and 24 V automotive and industrial environments. Key specifications include 17 A continuous load current, 200 mOhm typical on-state resistance, and 4.5 V to 42 V operating supply range that tolerates load-dump transients on 24 V buses. What is a smart high-side switch? A high-side switch is a power semiconductor that sits between the positive supply rail and the load, controlling current flow on the high side of the circuit. A 'smart' switch integrates the power MOSFET, gate driver, current sensing, and protection logic into a single IC, replacing discrete solutions built from MOSFETs, sense resistors, fuses, and comparators. Within the power management IC hierarchy, smart high-side switches belong to the load-driver subcategory that bridges microcontrollers and actuators such as lamps, solenoids, motors, and heaters. The BTS441TGATMA1 embeds overload protection with active current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump, fast demagnetization of inductive loads, and ESD protection. Its diagnostic feedback pin reports open-load and overtemperature conditions to the host microcontroller. The PG-TO263-5-2 package features an exposed thermal pad that reduces junction-to-ambient thermal resistance, enabling sustained 17 A operation on standard FR4 copper. Architecturally, the device uses a vertical DMOS output stage driven by a charge-pump-derived gate bias, allowing true N-channel high-side switching without the need for an external boost supply. The integrated current-sense amplifier outputs a proportional analog signal, while the status pin uses open-drain logic for easy connection to 3.3 V or 5 V MCUs. Combined, these features allow a single GPIO and one ADC channel to drive and monitor a resistive, inductive, or capacitive load. Typical applications include automotive lighting control, solenoid and valve drivers, relay replacement, power distribution modules, and industrial 24 V PLC outputs. Engineers select the BTS441TGATMA1 when they need a robust, self-protected high-side driver for inductive loads where discrete protection circuitry would consume excessive PCB area. When designing the load path, keep the ground return short to ensure accurate current sensing, and place a TVS or freewheeling diode near inductive loads even though the device includes internal demagnetization, to limit peak voltages during abrupt turn-off.
BTS443PAUMA1 - Smart High-Side Power Switch, 21A, 36V | Infineon
The Infineon BTS443PAUMA1 is a single-channel smart high-side power switch built on a vertical power MOSFET and housed in a PG-TO252-5-11 (DPAK-5, 4 leads + tab) surface-mount package. It is rated for an operating range up to 36V (load-dump tolerant beyond that), delivers up to 21A continuous load current, and dissipates up to 42W. According to the Infineon datasheet, it integrates short-circuit protection, current limitation, overload protection, thermal shutdown, overvoltage protection (including load dump), loss-of-ground protection, and loss-of-Vbb protection (with external components), making it a one-chip solution for replacing discrete high-side MOSFETs plus their protection circuitry. A smart high-side power switch is a semiconductor device that sits between the battery/load supply and a resistive or inductive load (lamps, motors, solenoids, relays), turning it on and off in response to a low-power logic-level control signal from a microcontroller. The "smart" aspect refers to embedded diagnostic and protective features — current sense output, fault feedback, and self-protection — that a discrete MOSFET cannot provide alone. Within the broader taxonomy, the BTS443PAUMA1 belongs to the PROFET (Protected MOSFET) family, which is a subset of power distribution switches, itself part of the power management IC category. AEC-Q100 qualification on the automotive-grade variant makes it a workhorse in 12V/24V automotive body electronics. Key electrical features include an on-state resistance (RDS(on)) in the tens of milliohms, a built-in charge pump to drive the N-channel MOSFET fully on, status flag for fault feedback, and a current sense pin (IS) that delivers a proportional current for load-current monitoring. Reverse-battery protection is achieved by self turn-on of the power MOSFET (Reversave), eliminating the need for an external reverse-polarity diode. The integrated charge pump and vertical DMOS structure minimize quiescent current draw when the switch is off. The BTS443P uses a vertical power-MOSFET process, which gives much lower RDS(on) per unit silicon area than lateral MOSFETs and is what enables the 21A rating in the small DPAK-5 footprint. Its switching behavior is slew-rate controlled to limit electromagnetic interference (EMI), and the diagnostic pin (IS) provides both analog current-sense and digital fault-flag information. Protection thresholds (overcurrent, overtemperature) are factory-trimmed so no external component calibration is required. Typical applications include automotive lamp drivers (headlamps, tail lamps, brake lights, fog lamps), PTC heater control, solenoid and relay replacement in body control modules, and industrial 24V load switching. The chip is also used in truck and agricultural vehicle 24V systems thanks to its load-dump tolerance. According to the Infineon datasheet, the device is qualified per AEC-Q100 for automotive use. When designing with the BTS443PAUMA1, place a reverse-battery protection block (zener + resistor) on the Vbb pin and ensure the tab is soldered to a copper pour sized for the worst-case thermal dissipation — at 13.5V input switching a continuous 21A load, dissipation can easily exceed the 42W rating without adequate copper. Always use the IS pin's ground reference as close as possible to the device GND to preserve sense accuracy. This page synthesizes distributor stock data, parametric drop-in alternatives, and practical thermal/PCB design notes not found in a single view in the Infineon datasheet — useful as a quick engineering reference for BOM validation.
BTS452RATMA1 - 1.8A Smart High-Side Switch | Infineon
The Infineon BTS452RATMA1 is a 24 V smart high-side power switch with an integrated vertical N-channel power FET, housed in a PG-TO252-5-11 (DPAK-5) surface-mount package. The device provides 1.8 A typical continuous load current capability and is part of Infineon's Classic PROFET 24 V family designed for automotive and industrial load driving. The BTS452RATMA1 features an on-state resistance of approximately 200 mΩ, ensuring low conduction loss when driving resistive or inductive loads. A high-side switch is a power distribution semiconductor that sits between the supply rail (typically +12 V or +24 V) and the load. It replaces mechanical relays and discrete MOSFETs by integrating the power FET, gate driver, and protection logic into a single chip. High-side switches are used wherever a microcontroller must safely switch a grounded load (lamps, motors, solenoids, heaters) and need diagnostic feedback, current limiting, and protection against fault conditions such as short circuits, overload, and thermal runaway. Key specifications include an operating voltage range of 6 V to 32 V (load-dump tolerant up to 42 V), embedded overload protection with active current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load dump, and undervoltage shutdown. The integrated charge pump drives the N-channel MOSFET gate, while a status feedback pin reports fault conditions back to the supervising microcontroller, enabling ISO 26262-relevant diagnostic coverage in safety applications. The BTS452RATMA1 uses a vertical DMOS power stage combined with CMOS control logic on a single die, achieving low specific on-resistance while maintaining robust short-circuit ruggedness. The 8 mΩ nominal RDS(on) (per Infineon's PROFET 24V datasheet family) is achieved through the vertical FET structure that places the drain on the backside of the die, allowing direct thermal conduction into the DPAK tab. Typical applications include automotive lighting control (headlamps, tail lamps, indicators), relay and solenoid drivers, HVAC blower control, seat-heater switches, and 24 V industrial automation loads. The integrated diagnostics and protection features make it well suited for direct microcontroller-driven load switching without additional discrete protection circuitry. Designers should pay attention to thermal management: the DPAK-5 tab must be soldered to a sufficient copper pour area (typically 35 cm² or more on a standard 1 oz FR-4 PCB) to keep junction temperature within ratings under worst-case load conditions. The input pin requires a resistor for reverse-battery protection, and the status pin needs a pull-up to logic supply voltage. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, drop-in same-package alternatives from the Infineon PROFET family, and practical PCB thermal design notes not found in the manufacturer datasheet alone.
BTS452TATMA1 - 1.8A High-Side Smart Power Switch | Infineon
The Infineon BTS452TATMA1 is a 1.8 A high-side N-channel power switch with integrated vertical power MOSFET, providing embedded protection and diagnostic functions, housed in a PG-TO252-5 (DPAK-5) surface-mount package. It operates from 6 V to 52 V supply voltage, drives up to 1.8 A continuous load current, and offers 200 mOhm typical on-state resistance (RDS(on)). The device is part of Infineon's MINI-PROFET family, designed for 12 V, 24 V, and 42 V DC automotive and industrial load management. A high-side power switch (also called a smart high-side driver or PROFET) is an N-channel MOSFET configured between the supply rail and the load, allowing the load to be grounded and switched by pulling the MOSFET gate high. Compared with discrete MOSFETs plus fuses, an integrated high-side switch embeds protection (overcurrent, short-circuit, overtemperature, overvoltage, undervoltage) and diagnostic feedback (status flag), reducing BOM count and improving reliability in harsh electrical environments such as automotive 12 V/24 V buses. Key features include active current limiting with restart, thermal shutdown with auto-restart, overvoltage protection including load-dump survival, undervoltage shutdown, and an open-drain status output. The BTS452TATMA1 is microcontroller-compatible, accepting 3.3 V or 5 V logic inputs directly at the IN pin. Its PG-TO252-5 (DPAK) package with exposed metal tab provides low thermal resistance (~50 C/W) for continuous 1.8 A operation without external heatsinking on moderate PCB copper area. The BTS452TATMA1 uses Infineon's SIPMOS vertical DMOS process, providing low RDS(on) per unit silicon area and inherent avalanche ruggedness. The integrated charge pump generates the gate drive above the supply rail to fully enhance the N-channel MOSFET, while the diagnostic logic monitors drain current and die temperature. The result is a single-package solution that replaces a discrete MOSFET, gate driver, current-sense resistor, and protection circuitry. Typical applications include automotive body electronics (lighting, seat heaters, mirror heaters, door locks), industrial 24 V load switching (solenoids, valves, small motors), and resistive/inductive/capacitive load control in PLCs and process control modules. It is qualified to AEC-Q100 standards for automotive use and is one of the most widely deployed PROFET parts in vehicle ECUs. When designing with this device, ensure the IN pin logic levels match your microcontroller's GPIO output (TTL/CMOS compatible), route the status output to an interrupt-capable input for fault handling, and observe derating above 25 C ambient. The exposed pad must be soldered to a copper pour of at least 50 mm² for rated continuous current at 85 C ambient. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
BTS462TATMA1 - 3.5A Smart High-Side Power Switch | Infineon
The Infineon BTS462TATMA1 is a 3.5 A smart high-side N-channel power switch housed in a PG-TO252-5 (DPAK-5) surface-mount package, providing one channel of protected load driving with embedded diagnostics. Operating from a 5 V to 34 V supply range, this MINI-PROFET device integrates a vertical power MOSFET, protection circuitry, and a status feedback path, making it a drop-in solution for harsh 12 V/24 V automotive and industrial environments. A smart high-side power switch is a semiconductor relay that places the load between ground and the switch output, allowing the IC to drive resistive, capacitive, and inductive loads with controlled turn-on/turn-off. High-side switches sit in the power management IC hierarchy above simple MOSFET drivers and below multi-channel system basis chips, providing per-channel protection against the most common fault modes encountered in automotive wiring (short-to-ground, overload, load-dump, and reverse-battery events). Key specifications include a continuous drain current of 3.5 A, an on-state resistance (RDS(on)) typically around 50 mOhm at 25 C, current-limit trip near 7 A, and built-in thermal shutdown with auto-restart. The device also features overvoltage protection covering load-dump transients, undervoltage shutdown to prevent in-rush faults, fast demagnetization for inductive loads, and a diagnostic feedback pin that signals open-load and overtemperature conditions back to the host microcontroller. Architecturally, the BTS462TATMA1 uses a vertical N-channel DMOS output stage driven by a CMOS charge-pump and logic interface, all co-integrated on a single die. The charge-pump maintains the gate drive above the source rail, ensuring low RDS(on) regardless of battery voltage. This monolithic integration delivers far better protection coverage than a discrete MOSFET plus fuse approach while reducing PCB footprint. Typical applications include automotive body controllers driving lamps, solenoids, and DC motors; industrial PLC discrete output modules; HVAC actuators; and any 12 V/24 V load that requires embedded protection. The PG-TO252-5 package provides a thermal pad that, when properly soldered to a copper pour, enables sustained 3.5 A operation without a heatsink. When designing with the BTS462TATMA1, observe input capacitor placement (close to Vbb pin) and a generous copper area on the drain tab to limit junction temperature rise. Fault-flag interpretation should be debounced in software, as the STATUS pin can pulse during legitimate switching transients. This page consolidates distributor pricing, cross-brand drop-in equivalents, and practical protection-circuit notes that extend beyond the manufacturer datasheet's typical application example.
BTS4880R - 8-Ch 24V Smart High-Side Switch 200mΩ | Infineon
The Infineon BTS4880R is a Classic PROFET 24V smart 8-channel high-side power switch housed in a SSOP-36 (DSO) power package, with each channel presenting a typical 200 mΩ on-resistance and capable of switching up to 0.625 A per channel. Eight independent high-side outputs make the device well suited to driving resistive, inductive and capacitive loads directly from a 24 V vehicle or industrial bus. Each output integrates short-circuit current limiting, overload protection, thermal shutdown with autorestart, overvoltage (including load-dump) protection, and undervoltage lockout with auto-recovery hysteresis. A high-side switch (also called a high-side driver or PROFET) is a power semiconductor device that sits between the supply rail and the load, controlling current flow to the load while protecting both itself and the wiring harness from fault conditions. The BTS4880R belongs to Infineon's Classic PROFET family, which is a generation of self-protected smart power switches that replace electromechanical relays and discrete fuse/MOSFET circuits in 12 V and 24 V automotive and industrial applications, providing a smaller PCB footprint, lower quiescent current, and built-in diagnostic feedback. Key features include 200 mΩ typical per-channel R_DS(on) at 25 °C, 0.625 A nominal load current, load-dump robustness per ISO 7637-1 / DIN 40839, CMOS-compatible logic inputs, internal charge pump to drive the N-channel MOSFET outputs, and a common diagnostic output with open-load detection in OFF state. The device operates across an extended -40 °C to +125 °C ambient range and is qualified for harsh automotive body-module environments. Architecturally, the BTS4880R integrates eight N-channel vertical MOSFETs whose gates are driven above the supply rail by an internal charge pump; this topology enables true high-side switching with very low R_DS(on). The classic PROFET design also folds in a thermal sensor per channel and a central fault manager that multiplexes diagnostic information back to the microcontroller over a single status pin, simplifying both wiring and software diagnostics. Typical applications include automotive body control modules (lighting, door locks, mirror heaters, seat motors), 24 V industrial PLC output cards, programmable logic controller digital output modules, and any distributed load-driver board that previously used discrete relays or fuses. Replacing a relay cluster with a single BTS4880R reduces PCB area by an order of magnitude while adding electronic protection that relays cannot provide. When designing with the BTS4880R, ensure that the input logic levels match your microcontroller's 3.3 V or 5 V I/O and that the VS supply pin carries sufficient bulk capacitance to absorb load-dump transients. Verify per-channel power dissipation against the SSOP-36 thermal resistance and add a copper pour on the exposed pad to keep junction temperature within safe limits. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten design-in cycles and select verified cross-vendor substitutes for the BTS4880R.
BTS500071LUAAUMA1 - 55A Smart High-Side Switch | Infineon
The Infineon BTS500071LUAAUMA1 is a 0.7 mΩ single-channel smart high-side power switch from the Power PROFET+ 12 V family, housed in a PG-HSOF-8-5 leadless package with exposed thermal pad. The device delivers up to 55 A continuous load current and operates from a 5.8 V to 18 V supply range, making it purpose-built for harsh 12 V automotive and industrial load-switching applications. Key differentiating specifications include a 0.7 mΩ typical on-state resistance, integrated reverse-battery protection (Reverse ON), and built-in diagnostic feedback. A high-side smart switch (also called an intelligent high-side switch or IHSS) is a semiconductor power switch placed between the positive supply rail and the load, replacing mechanical relays and discrete MOSFETs with a fully protected solid-state alternative. Within the broader component taxonomy, the BTS500071LUAAUMA1 belongs to: high-side switch -> intelligent load driver -> power distribution switch -> power management IC -> semiconductor device. By integrating the power MOSFET, gate driver, current sensing, and protective logic in one die, smart high-side switches reduce PCB area, eliminate wiring harness weight, and provide MCU-readable fault diagnostics for body-electronics ECUs. Key features include a 55 A continuous current rating, 0.7 mΩ typical RDS(on) at 25 °C, dedicated current-limit and overload shutdown, over-temperature protection with auto-restart, over-voltage clamp at VDS, and ground-loss robustness. The PG-HSOF-8-5 package provides a top-side exposed pad that delivers an exceptionally low thermal resistance, enabling the 55 A rating without external heatsinking on properly designed copper pours. Reverse ON capability protects the device and downstream loads during accidental reverse-polarity battery connection. Architecturally, the BTS500071LUAAUMA1 uses Infineon's N-channel Power PROFET+ trench MOSFET with integrated charge pump, current-sense mirror, and embedded protective state machine. The IS pin provides proportional analog load-current feedback to the MCU ADC, enabling closed-loop current monitoring for predictive maintenance and fault pre-warning. The diagnostic pin reports overtemperature, open load, and short-to-ground conditions through standard Infineon KN/SPI protocols. Typical applications include automotive body control modules, HVAC blower control, seat-heater drivers, and 12 V industrial solenoid/valve drivers. The AEC-Q100 qualification and 12 V optimized RDS(on) make it ideal for replacing electromechanical relays in vehicle electrical systems. Design considerations include proper PCB thermal design—minimum 6 cm² of 2 oz copper on the exposed pad is recommended for full 55 A operation. Place a 100 nF ceramic decoupling capacitor within 5 mm of the Vbb pin to suppress load-dump transients. This page synthesizes distributor pricing, parametric alternatives, and practical PCB layout guidance not found in the manufacturer datasheet, plus a comparison with related PROFET+ family members.
BTS500101LUAAUMA1 - 1.0mΩ 46A High-Side Switch | Infineon
The Infineon BTS500101LUAAUMA1 is a 1.0 mΩ single-channel smart high-side power switch rated for 46 A continuous load current, housed in an 8-pin PG-HSOF-8-6 (TO-leadless) package with exposed thermal pad. It operates from a supply voltage of 3.1 V to 28 V and is built on Infineon's PROFET™ + 12/24/48 V technology platform, providing integrated protection, diagnostics, and reverse-ON capability for robust 12 V, 24 V, and 48 V automotive and industrial loads. A high-side power switch (also called a high-side driver or smart high-side switch) is an N-channel MOSFET placed between the load and the positive supply rail, controlled by a logic-level input. Unlike a low-side switch, it keeps the load referenced to ground when OFF, eliminating ground-shift issues and improving short-circuit safety. Within the broader taxonomy, the BTS50010-1LUA belongs to the family of power distribution switches -> load drivers -> power management ICs -> semiconductors. The integrated logic, gate driver, charge pump, and protection blocks form a 'smart' switch that replaces discrete MOSFETs plus fuses, thermistors, and discrete protection circuitry. Key features include a 1.0 mΩ typical on-state resistance (R_DS(on)) at 25 °C, a continuous load current of 46 A, an operating voltage range of 3.1 V to 28 V, and an active-high logic input compatible with 3.3 V and 5 V microcontrollers. The part provides short-circuit protection, over-temperature protection with auto-restart, over-voltage protection, load-dump robustness, and ground-loss protection. A current sense (IS) pin delivers a proportional analog diagnostic signal for fault detection, and the DEN (diagnostic enable) input is logic-level compatible and referenced to VS. Typical applications include automotive body electronics (e.g., PTC heater, glow plug, fan, pump, and lighting loads), industrial 24 V systems, truck and agricultural 24 V/48 V platforms, and any application requiring a protected, diagnosable high-side driver. The exposed thermal pad of the PG-HSOF-8-6 package supports direct PCB cooling, enabling full 46 A operation on properly laid-out four-layer boards. When designing with this part, follow Infineon PCB layout guidance for the PG-HSOF-8-6 thermal pad and place input capacitors close to the VS pin. For load currents above 30 A, allocate at least 600 mm² of copper on top and bottom layers tied to the exposed pad to keep junction temperature within SOA. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
BTS500101TAEATMA1 - 40A Smart High-Side Switch | Infineon | 12V Loads
The Infineon BTS500101TAEATMA1 is a single-channel smart high-side power switch in the PG-TO-263-7-10 (D2PAK-7) surface-mount package, built around an N-channel vertical power MOSFET with integrated charge pump and capable of driving loads up to 40A continuous / 250A peak in 12V automotive and industrial systems. Key headline parameters include a typical on-state resistance of 1.0 mΩ, a 48A maximum continuous load current rating, and a logic-level 3.3V/5V compatible input that allows direct connection to a microcontroller GPIO. The Power PROFET family integration brings protection and diagnostic features that simplify the design of robust load-driving stages. A smart high-side switch (also called a high-side power switch or intelligent power switch, IPS) is a semiconductor device that connects a load to the positive supply rail and includes on-state MOSFET conduction, gate drive charge pump, protection circuitry (overcurrent, overtemperature, short-to-ground/battery, overvoltage), and load-current feedback for diagnostics. Within the broader system hierarchy, a high-side switch sits between a discrete power MOSFET and a fully integrated motor/relay driver: it is more capable than a bare MOSFET but more load-focused than a half-bridge gate driver. Its job is to make a load "controllable" by a low-power logic signal while protecting the wiring harness and the MCU from fault events. Differentiating features of the BTS500101TAEATMA1 include an extremely low 1.0 mΩ R_DS(on) that minimizes conduction losses and thermal rise, an integrated charge pump that drives the N-channel MOSFET gate from the logic supply, built-in load-current sense output for fault detection and load monitoring, and AEC-Q100 qualification for automotive deployment. The PG-TO-263-7-10 (D2PAK-7) package with exposed thermal tab provides a low thermal resistance path, which is essential at 40A continuous current where I²R losses still produce significant heat. Architecturally, the device combines a vertical N-channel DMOS output stage, a charge pump that generates the gate boost voltage above Vbb, a sense-FET that mirrors load current into an IS pin, and a protection state machine that latches off on faults. Compared with discrete MOSFET + shunt-resistor solutions, this monolithic integration reduces PCB area, eliminates shunt-resistor tolerance errors, and provides much faster short-circuit response (typically tens of microseconds vs. milliseconds for an MCU ADC-driven shutdown). Typical applications include automotive glow-plug and PTC heater drivers, 12V DC motor control (HVAC blowers, fuel pumps, water pumps), resistive and inductive load switching (solenoids, valves), body electronics (seat heaters, mirror heaters), and industrial 24V/12V load management. The device is particularly suited to systems where load-health monitoring and fault reporting back to an ECU are required. When designing with the BTS500101TAEATMA1, ensure the exposed pad is soldered to a sufficient copper pour (typically 6 cm² or more on a 4-layer FR-4 board) to keep junction temperature within the 150°C limit at 40A. Place a 100 nF ceramic bypass close to the Vbb pin to suppress supply transients, and follow Infineon's recommended TVS protection on Vbb if the system is exposed to load-dump events per ISO 7637-2. This page synthesizes distributor pricing, qualified drop-in alternatives, and application-specific design notes not found in the manufacturer datasheet alone, giving engineers a faster path to a working BOM.
BTS500151TADATMA2 - 33A High-Side N-Channel Power Switch | Infineon
The Infineon BTS500151TADATMA2 is a 33 A high-side N-channel power switch (HIC-PROFET family, also branded as PROFET+ 12V) housed in a 7-pin (6 leads + tab) TO-263 surface-mount package. It is engineered for demanding 12 V automotive and industrial load-driving applications including relays, solenoids, motors, lamps, and heaters. Built on Infineon's SMART7 power MOSFET technology with charge-pump driven gate, the device integrates comprehensive protection and diagnostic functions into a single chip, enabling PCB-area savings versus discrete MOSFET-plus-driver designs. High-side switches (HSS) are a category of power distribution switch that sits between the supply rail and the load. They use an N-channel MOSFET on the high side of the load so the output can be pulled all the way to the positive rail, and they are driven by an internal charge pump to overcome the VGS threshold of the N-channel device. Within the broader taxonomy, the BTS500151 belongs to: high-side switch -> power distribution switch -> smart power switch -> power management IC -> semiconductor. It is one of the canonical building blocks for ISO 26262 power distribution ECUs. Key features include a 33 A continuous load current rating (with a peak limit near 39 A per Arrow's listing), low typical on-state resistance for low dissipation, integrated reverse-battery protection, over-current / over-temperature / over-voltage shutdown, ground-loss detection, open-load detection in OFF state, and a status diagnostic output. The 33 A continuous rating allows one switch to replace a discrete relay in many applications, simplifying harness and BOM count. Built-in AEC-Q100 qualification makes the part suitable for automotive body and powertrain ECUs operating across -40C to +150C junction temperature. Typical applications include automotive body control modules (lighting drivers, door lock solenoids, seat heaters), industrial 24 V PLC discrete outputs, truck/construction 24 V load switching, and programmable logic controllers that need a protected, diagnosable high-current sink-source path. The diagnostic pin enables ECU-level fault handling and helps meet ISO 26262 requirements. When designing with this device, ensure the PCB copper pour on the D2PAK tab is sized to keep junction temperature within the SOA envelope at the worst-case load current and ambient. Use a 1k pull-up on the STATUS pin and a 100 nF local bypass on Vbb; otherwise the inrush and ESD immunity of the load lines can degrade. The Infineon PROFET+ family datasheet provides a layout reference footprint and a thermal simulation model that should be followed for >20 A continuous loads.
BTS500201TADATMA1 - 29A HIC-PROFET High-Side Switch | Infineon
The Infineon BTS500201TADATMA1 is a 29 A single-channel smart high-side power switch from Infineon's HIC-PROFET family, housed in a TO-263-7-10 surface-mount package with gull-wing leads. The device integrates a vertical N-channel power MOSFET with on-resistance of approximately 8 mΩ (typical), a charge pump for full DC operation at low battery voltages, and comprehensive protection and diagnostic circuitry including current limiting, overtemperature shutdown, short-circuit protection, and ground-loss detection. A high-side power switch is a semiconductor device that connects a load (such as a lamp, solenoid, relay coil, or motor winding) to the positive supply rail and is controlled by a low-voltage logic-level signal on its input pin. HIC-PROFET sits within the broader smart-power IC hierarchy (smart high-side switch -> power distribution switch -> power management IC -> semiconductor), where it acts as an electronically-controlled, self-protecting replacement for an electromechanical relay or a discrete MOSFET plus fuse combination. Key features include a nominal 13.5 V operating voltage (load dump tolerant to ~40 V), continuous output current up to 29 A, very low standby current, slew-rate control to limit electromagnetic emissions during turn-on, and an open-drain status flag pin for fault feedback to the host microcontroller. The integrated charge pump drives the gate of the internal N-channel MOSFET above the battery rail, allowing true DC operation even at low supply voltages. Built-in diagnostic functions include open-load detection in both on and off states, short-to-ground and short-to-battery detection, and overtemperature shutdown with auto-restart. Typical applications include automotive body-control modules, junction-box electronics, LED lighting drivers, HVAC blower and fan controls, and any industrial 12 V/24 V DC load requiring a robust, protected, and diagnosable switching element. The device is AEC-Q100 qualified for automotive environments and is widely used in safety-relevant subsystems such as exterior lighting and auxiliary power outlets. When designing with this part, pay attention to the input-pin pull-down resistor requirement (keeps the switch off during ECU power-up before firmware initializes the GPIO), and ensure adequate PCB copper area under the tab to keep the junction temperature within the SOA at peak current. For replacement sourcing, the same-footprint TO-263-7-10 family includes parts with different current ratings and RDS(on) values - see the alternatives table below for cross-references.
BTS500251TEAAUMA1 - 24A Smart High-Side Switch | Infineon PROFET+
The Infineon BTS500251TEAAUMA1 (datasheet marketing name BTS50025-1TEA) is a 24 A single-channel smart high-side power switch in the Power PROFET+ family, housed in a PG-TO252-5-11 surface-mount package. It integrates a 2.5 mΩ N-channel MOSFET output stage with embedded protective and diagnostic functions, targeting 12 V, 24 V, and 48 V automotive and industrial loads. What is a smart high-side switch? A smart high-side switch is an integrated power semiconductor that sits between a load and the positive supply rail. It replaces discrete MOSFETs, fuses, and relay logic with a single IC that controls the load via a logic-level input while continuously monitoring current, temperature, and supply voltage. Within the broader hierarchy, a high-side switch belongs to power distribution switches, which are part of the power management IC family used to drive resistive or inductive loads such as motors, heaters, lamps, and solenoids. Key specifications include a 2.5 mΩ typical on-state resistance, 24 A continuous load current capability, and a logic-level (3.3 V/5 V) CMOS-compatible input. The device operates across 4.5 V to 28 V supply, with reverse battery protection rated for -28 V and load-dump robustness up to 42 V. Embedded diagnostics report open-load, short-to-ground, short-to-battery, and overtemperature faults through a current-sense IS pin. The PG-TO252-5-11 package offers a thermal resistance around 35 C/W junction-to-ambient on a standard 1 oz copper JEDEC test PCB, enabling sustained high-current switching without external heatsinking. The BTS50025-1TEA uses a vertical N-channel DMOS output stage driven by a charge-pump-assisted gate driver. This topology gives very low R_DS(on) for reduced conduction losses, while the integrated charge pump keeps the gate enhancement high enough to fully turn on the DMOS at low battery voltages. Reverse-polarity protection is implemented on-die, eliminating the need for an external blocking diode and saving both board space and forward-voltage drop. Typical applications include automotive glow-plug and PTC heater drivers, electric water-oil-fuel pumps, HVAC blower fans, LED lighting modules, and industrial 24 V solenoid or valve drivers. The wide operating range also makes it attractive for 48 V mild-hybrid auxiliary loads. Designers appreciate the family for combining a small footprint with the diagnostic feedback that modern ECU architectures require. When designing with this part, observe the datasheet's recommended PCB copper layout for the drain tab to keep thermal resistance within budget. The IS pin output requires an external sense resistor and, for high-accuracy current monitoring, a low-pass filter to reject switching transients. Reverse-battery events must be checked against the -28 V rating for the application's worst-case jump-start and load-dump profile. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the Infineon datasheet, giving engineers a faster path from selection to qualified PCB.
BTS500801TEAAUMA1 - 10A Smart High-Side Switch | Infineon PROFET
The Infineon BTS500801TEAAUMA1 is a single-channel 10 A smart high-side power switch housed in a PG-TO252-5-11 (DPAK-5) surface-mount package, built around an N-channel vertical power MOSFET with integrated charge pump. Designed as a Classic PROFET 12 V device, it delivers 10 A continuous load current with a typical on-state resistance of 10 milliohms, providing embedded protective functions for automotive and industrial loads. A high-side switch (also called a high-side driver) is a semiconductor switch placed between the positive supply rail and the load, in contrast to a low-side switch that sits between the load and ground. Within the power management hierarchy, this part belongs to the smart power switch family -> power distribution switch -> load driver -> power management IC. Smart high-side switches integrate the MOSFET, gate driver, charge pump, and protection logic into a single package, replacing discrete MOSFET + driver designs in body electronics and similar applications. Key features include a 12 V nominal operating supply (4.5 V to 28 V load supply range), integrated reverse-battery protection, over-current and over-temperature shutdown with auto-restart, ground-loss detection, ESD protection, and a diagnostic current-sense (IS) pin for load current feedback. The device also provides short-circuit protection with configurable current limit and over-voltage clamp (active clamp) at the load. The PG-TO252-5-11 package offers a low thermal resistance path via the drain tab, enabling sustained 10 A operation on FR4 PCB with adequate copper area. The BTS50080-1TEA architecture combines an N-channel vertical power MOSFET with a charge pump that generates the gate voltage above the supply rail, ensuring full enhancement of the power stage even at low battery voltages. The diagnostic current-sense output delivers a current proportional to the load current, allowing the microcontroller to detect open-load, short-to-ground, and short-to-battery faults without additional shunt resistors. Typical applications include automotive lighting (headlamps, tail lamps, turn signals, interior LED modules), body electronics (door locks, seat controllers, mirror heaters), 12 V relay and solenoid replacement, and industrial 24 V (with derating) actuator drivers. According to the Infineon BTS50080-1TEA datasheet, the part targets harsh automotive environments with high inrush loads. When designing with this device, ensure the PCB copper area around the drain tab is sized to keep junction temperature below 150 C at the worst-case ambient. A series resistor or TVS on the input protects against load-dump transients above 28 V, and the IS pin requires an external resistor to convert sense current to a voltage readable by the ADC. This page synthesizes distributor pricing from DigiKey, Mouser, Octopart, and LCSC, plus drop-in Infineon PROFET alternatives and practical design notes not aggregated in the manufacturer datasheet alone.
BTS50101EKBXUMA1 - 10A Smart High-Side Switch | Infineon PROFET
The Infineon BTS50101EKBXUMA1 is a single-channel 10 A smart high-side power switch built on Infineon's Smart6 technology, housed in a PG-DSO-14-47 EP (exposed pad) surface-mount package. The device integrates an N-channel vertical power MOSFET with charge pump, offering a typical on-state resistance of 16 mΩ (datasheet headline: 20 mΩ maximum) and a continuous load current rating of 10 A at an operating voltage range up to 28 V. A high-side power switch (also called a high-side driver or PROFET) is a semiconductor device that controls a load connected between the switch output and ground, in contrast to a low-side switch which sits between the load and ground. High-side switches are essential in automotive and industrial systems because they can disconnect the load completely in the off state, eliminating parasitic ground currents and improving safety during fault conditions. Within the broader taxonomy, the BTS50101EKBXUMA1 belongs to: PROFET family -> Smart High-Side Switch -> Power Distribution Switch -> Power Management IC -> Semiconductor. Key features include built-in protective functions such as load current limitation, overtemperature shutdown, overvoltage protection (including load-dump robustness), reverse battery protection, and ground-loss protection. A current sense (diagnostic) pin provides analog load-current feedback for fault detection and load monitoring. The integrated charge pump drives the N-channel MOSFET gate from the logic-level input signal, enabling the switch to be controlled directly by a 3.3 V or 5 V microcontroller GPIO. Smart6 technology further enhances electromagnetic compatibility (EMC) and standby-current performance. Typical applications include automotive body electronics (driving lamps, solenoids, and motors), industrial process control, programmable logic controller (PLC) outputs, and any 12 V / 24 V system requiring protected, diagnosed high-side switching. The exposed pad dramatically lowers thermal resistance, supporting continuous 10 A operation without external heatsinking in properly laid-out PCBs. Design consideration: maintain a copper pour of at least 6 cm² on the exposed pad to keep junction temperature within safe limits at full load. The diagnostic pin output is ratiometric — calibrate sense resistor values against the datasheet's kILIS factor to convert sense current to actual load current. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer page.
BTS5014SDAAUMA1 - 6A Smart High-Side Power Switch | Infineon
The Infineon BTS5014SDAAUMA1 is a one-channel smart high-side power switch built on an N-channel vertical power MOSFET with charge pump, housed in a PG-TO252-5-11 (DPAK-5) surface-mount package. It delivers up to 6A nominal load current with embedded protective functions including current limiting, over-temperature shutdown, and over-voltage clamp, making it suitable for automotive and industrial 12V/24V load driving applications. Key specifications include an operating supply range up to 28V nominal (with load-dump tolerance to 41V typical), very low standby current, and proportional load current sensing via the IS pin. The device integrates a charge pump that drives the gate of the N-channel MOSFET above the battery rail, enabling true high-side switching without the cost of a P-channel device, and provides diagnostics such as fault feedback and open-drain status output. A high-side switch (HSS) is a power distribution IC that connects a load (lamp, solenoid, motor, heater) to the positive battery rail under microcontroller control while providing on-chip protection. Compared with discrete MOSFET plus fuse approaches, integrated smart switches reduce PCB area, eliminate the external fuse, and provide programmable current limits plus fault telemetry to the ECU. They sit within the broader power management IC hierarchy as load drivers, distinct from voltage regulators that maintain a constant rail. The BTS5014SDA family is fabricated in Infineon's automotive-qualified SMART7 process technology, which combines the power MOSFET, charge pump, control logic, and ESD protection on a single die. This monolithic integration ensures consistent RDS(on) and protection behavior across the full automotive temperature range of -40C to +150C junction, and supports PPAP documentation for OEM tier-1 use. Typical applications include automotive body electronics (lighting, door locks, seat heaters), industrial 24V PLC output modules, and any 12V/24V load that requires resettable over-current protection rather than a one-shot fuse. The current sense output enables closed-loop load monitoring for bulb-out detection or wire-break diagnostics. A recommended design tip is to place a reverse-polarity protection device (Schottky diode or P-FET) on the supply line, since the BTS5014SDA does not include reverse-battery blocking internally. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
BTS5016SDA - 5.5A Smart High-Side Switch | Infineon
The Infineon BTS5016SDA is a one-channel smart high-side power switch from the Classic PROFET™ 12V family, housed in a PG-TO252-5-11 (DPAK-5) surface-mount package. The device integrates an N-channel vertical power MOSFET with charge pump, current-controlled input, and embedded protective functions including load current sense, overtemperature shutdown, and short-circuit shutdown. It delivers a typical continuous load current of 5.5 A and supports 12 V automotive battery rails with operating voltage range up to 16 V absolute maximum. A smart high-side switch (also called a high-side driver, intelligent power switch, or PROFET) is a semiconductor device that connects a load to the positive supply rail and integrates overcurrent, overvoltage, overtemperature, and short-circuit protection together with diagnostic feedback. High-side switches sit hierarchically within the power distribution family, which itself belongs to the broader power management integrated circuit (PMIC) category. By replacing discrete fuses, relays, and MOSFET driver circuitry, they reduce PCB area and improve system reliability in automotive and industrial 12 V systems. The BTS5016SDA provides a defined fault signal during overload, overtemperature, or short-circuit events, enabling the microcontroller to take protective action. Its load current sense pin delivers a proportional analog current that the host ECU can read via an ADC for diagnostics and load monitoring. The device operates across an input voltage range of approximately 4.5 V to 16 V and offers very low standby current, making it well suited to permanently wired battery applications that must meet stringent quiescent current budgets. The internal architecture uses a charge pump to drive the N-channel MOSFET gate above the battery rail, achieving a low typical R_DS(on) of around 16 mΩ at room temperature. This low on-resistance minimizes conduction losses and thermal rise during high-current load switching, allowing compact DPAK PCB layouts without forced cooling. The integrated reverse-battery protection (Reversave™) and EMC optimization further simplify compliance with automotive EMC standards. Typical applications include automotive body and lighting loads, including LED daytime running lights, tail lamps, seat heaters, mirror heaters, and small DC motor drivers. The diagnostic feedback and protective features also suit industrial 12 V/24 V systems such as solenoid and valve control. When designing with the BTS5016SDA, place a reverse-polarity protection element on the supply side if the system must survive double-battery jump-start events, and ensure the exposed pad is soldered to a sufficient copper pour for heatsinking. Always reference the device's load current sense resistor value in the datasheet to scale the analog diagnostic current correctly for your ADC reference voltage. This page synthesizes distributor pricing, drop-in alternatives from the BTS50xx PROFET family, and practical design notes not found in the manufacturer datasheet, giving engineers a complete BOM-ready reference for this Classic PROFET 12 V high-side switch.
BTS5016SDAAUMA1 - 5.5A Smart High-Side Switch | Infineon
The Infineon BTS5016SDAAUMA1 is a single-channel, N-channel vertical power MOSFET smart high-side switch rated for 5.5 A continuous load current in a PG-TO252-5-11 (DPAK-4 leads + tab) surface-mount package. Part of Infineon's Classic PROFET™ 12V family, it integrates an N-channel vertical power MOSFET with charge pump, current-controlled input pin, load current sense output, Reversave™ reverse-polarity protection, very low standby current, fast demagnetization of inductive loads, stable behavior at under-voltage, and improved EMC. The device is qualified for 12 V automotive loads including lamps, solenoids, and relay drivers. A high-side power switch is a semiconductor switch placed between the supply rail and the load; the switch connects the load to Vbat when activated, allowing the microcontroller ground-referenced logic to control it directly. Smart high-side switches add diagnostic feedback (load current sense) and protective functions (overcurrent, overtemperature, short-circuit, overvoltage, and reverse battery), eliminating the discrete fuse + relay + freewheeling diode + current-sense resistor chain traditionally used in body-electronics and powertrain ECUs. BTS5016SDAAUMA1 belongs to the broader category of protected MOSFET switches, hierarchically a sub-family of Power Distribution Switches within Power Management ICs. Key features include 5.5 A nominal load current, integrated current sense, very low standby current for quiescent-sensitive body modules, current-controlled input pin for direct MCU GPIO drive, fast demagnetization of inductive loads, Reversave™ reverse-polarity protection without external blocking diode, stable operation at under-voltage, and RoHS-compliant Green Product construction. The PG-TO252-5-11 DPAK package with exposed tab provides low thermal resistance (~50 C/W typical on 2 oz copper, 1 cm²) for dissipating I²R losses during high-current switching. Internally, the BTS5016SDAAUMA1 uses Smart SIPMOS chip-on-chip technology that stacks the control IC on top of the vertical power MOSFET die, sharing the same package substrate. The charge pump generates the Vgs above Vbat needed to enhance the N-channel MOSFET fully, while diagnostic current-mirror cells feed the IS pin with a fraction of the load current (typically 1/2000 ratio) for the MCU's ADC to read back load health and detect open/short conditions. Typical applications include automotive lighting (headlamps, tail lamps, turn signals, interior lighting), 12 V relay and solenoid drivers, body control modules, powertrain auxiliary outputs, and any 12 V DC load requiring diagnostic feedback and integrated protection. When designing with this part, ensure the load's inrush current is below the part's inrush rating (typically 10x nominal for short pulses), use proper PCB thermal layout with adequate copper area on the tab, and add an external TVS or capacitor on the output if long inductive wire harnesses are present.
BTS5030-1EJA - 30mΩ Smart High-Side Switch | Infineon PROFET+ 12V
The Infineon BTS5030-1EJA is a 30 mΩ single-channel Smart High-Side Power Switch (PROFET™ + 12V family) housed in a PG-DSO-8-43 EP package with exposed pad, designed for 5 V to 28 V automotive loads up to 36 A nominal. The output stage is built around an N-channel vertical power MOSFET driven by an integrated charge pump, enabling true rail-to-ground switching and protection against reverse battery transients. A high-side power switch (also called a smart high-side switch or PROFET) is a semiconductor relay that sits between the battery/load supply and the load, replacing an electromechanical relay or a discrete low-side MOSFET plus fuse combination. Compared with a low-side switch it provides inherent load-short-to-ground protection and simpler wiring, and compared with a mechanical relay it offers silent operation, fast diagnostics, and programmable current limiting. Within automotive power-tree taxonomy, the BTS5030-1EJA belongs to the family: smart high-side switch → protected MOSFET driver → power distribution IC → power management IC. Key features include a 30 mΩ typ. ON-state resistance at 25 °C, integrated protection functions (current limiting, overtemperature shutdown, overvoltage clamp including load-dump, short-to-ground and short-to-battery detection), and proportional load-current sensing via the IS pin. The device operates from a logic-level IN input (3.3 V / 5 V CMOS-compatible) and provides a DEN diagnostic feedback pin that distinguishes normal operation, open load, overtemperature, and short-circuit conditions. The exposed thermal pad keeps junction-to-ambient thermal resistance low enough to sustain multi-ampere loads without an external heatsink in PCB-typical layouts. Typical applications include automotive exterior and interior lighting (H7 headlamps, DRL, fog lamps, turn indicators), resistive and inductive loads (seat heaters, mirror heaters, solenoid valves), and general 12 V power distribution in body-control modules. Diagnostic feedback enables ECU-level fault detection without additional wiring or shunt resistors. When designing with the BTS5030-1EJA, observe the printed-circuit layout guidelines in the Infineon application note for PROFET+ 12V devices, keep the exposed pad soldered to a continuous ground copper pour for thermal performance, and respect the maximum energy rating during demagnetization of inductive loads.
BTS50301EJAXUMA1 - 30mΩ Smart High-Side Switch 5A 28V | Infineon
The Infineon BTS50301EJAXUMA1 is a 30 mΩ single-channel Smart High-Side Power Switch (PROFET) rated for 5 A continuous load current and 28 V nominal supply voltage, packaged in PG-DSO-8-43-EP with an exposed thermal pad. Built on an N-channel vertical power MOSFET with integrated charge pump, the device provides 1:1 power switching for resistive, inductive, and capacitive loads in automotive and industrial environments, and includes built-in reverse-battery protection up to -28 V without an external diode. A Smart High-Side Power Switch, also called a PROFET (Protected FET), is a power distribution switch that sits between the supply rail and the load, replacing discrete MOSFETs, fuses, and relay circuits. It belongs to the power distribution switch category within Power Management ICs, and integrates protection, diagnostic feedback, and PWM capability into a single SMD device. Compared to a discrete N-MOSFET plus discrete fuse design, a PROFET reduces PCB area by 60-80 percent and provides deterministic fault handling per the AEC-Q100 automotive reliability standard, while simplifying the BOM and shortening time to market for body-electronics designs. Key features include an on-state resistance (RDS(on)) of 30 mΩ typical at 25 °C, a 5 V to 28 V operating supply range, integrated reverse-battery protection up to -28 V, and built-in load current sensing with a proportional IS pin output. The device offers diagnostic feedback through the INH and DEN pins, supports PWM frequencies up to 1 kHz for dimming or speed control, and includes overtemperature, overcurrent, short-circuit, and overvoltage clamp protection. The PG-DSO-8-43-EP exposed-pad package delivers a junction-to-ambient thermal resistance of approximately 36 K/W on a standard 1s2p FR4 board, enabling sustained 5 A operation with proper copper layout. The BTS50301EJAXUMA1 architecture combines a vertical DMOS output stage, charge-pump gate driver, bandgap-referenced protection comparators, and a current-mirror sense element. The sense current (kILIS ratio) typically runs at a fixed ratio of the load current, enabling accurate fault detection without intrusive shunt resistors. Reverse-battery protection is achieved by substrate-switching techniques rather than an external diode, minimizing voltage drop and power dissipation while surviving the -28 V reverse polarity condition demanded by 12 V and 24 V automotive subsystems. Typical applications include automotive body electronics (door modules, seat controllers, mirror adjusters, lighting), industrial PLC outputs, 24 V truck and bus power distribution, and any system requiring protected 12 V or 24 V load driving. The device is particularly suited for applications where fault reporting back to a microcontroller is mandatory, since the IS pin provides analog load-diagnostics in real time, and the DEN pin can flag open-load events in the off state. When designing with the BTS50301EJAXUMA1, ensure the input supply is decoupled with at least 100 nF close to the Vbb pin and provide adequate copper area for thermal dissipation at high continuous currents. The DEN and INH pins must be driven per the timing diagram in the manufacturer datasheet; floating the INH pin disables the channel. This page synthesizes distributor pricing, drop-in alternative part numbers, application reference designs, and practical design notes that complement - but do not replace - the manufacturer datasheet for the BTS50301EJAXUMA1.
BTS51202EKAXUMA1 - 120 mΩ Dual Smart High-Side Switch | Infineon
The Infineon BTS51202EKAXUMA1 (BTS5120-2EKA) is a 120 mΩ dual-channel Smart High-Side Power Switch built on Infineon's Smart6 technology, housed in a PG-DSO-14-40-EP (14-pin SOIC with exposed pad) package. The device integrates two N-channel vertical power MOSFETs with charge pump, providing protective functions and diagnosis for each channel. It is qualified for automotive applications and designed to drive lamps up to 1×10W as well as LEDs in harsh automotive environments. What is a Smart High-Side Power Switch? A high-side power switch is a semiconductor device that controls current flow between a load and the positive supply rail, switching on the high (supply) side of the load rather than the low (ground) side. Smart high-side switches integrate a power MOSFET with a charge pump, gate driver, and protection/diagnostic features into a single IC. This topology belongs to the broader family of power distribution switches, which sit within the power management IC category and ultimately the semiconductor device hierarchy. By integrating protection locally, smart high-side switches replace discrete MOSFETs, gate drivers, fuses, and discrete protection circuitry, reducing PCB area and improving reliability. Key features of the BTS51202EKAXUMA1 include a typical on-state resistance of 120 mΩ per channel, a continuous output current rating of 2A per channel (typical 2.5A), and an operating voltage range from 8V to 18V (suitable for 12V automotive systems). The device integrates over-current, short-circuit, over-temperature, over-voltage, under-voltage lockout, and reverse-battery protection. An integrated charge pump drives the N-channel MOSFET gates for low-RDS(on) operation, and a status/diagnostic feedback pin reports fault conditions to the host MCU. The BTS5120-2EKA uses Infineon's Smart6 process technology, combining vertical power MOSFETs with on-chip CMOS control logic. The charge pump generates the gate-boost voltage required to fully enhance the N-channel MOSFETs from a 12V supply, achieving the low 120 mΩ on-resistance. Each channel operates independently with separate input control and diagnostic feedback, enabling per-channel fault handling and load management. Typical applications include automotive body electronics (e.g., lighting control, seat heating, mirror adjust), LED driver modules, HVAC blower control, and 12V power distribution in vehicles. The PG-DSO-14-EP exposed-pad package provides low thermal resistance for dissipating the ~1.8W maximum power under fault or steady-state load conditions. The reverse-battery protection eliminates the need for an external reverse-polarity diode, reducing BOM cost. When designing with this part, observe the maximum junction temperature of 150°C and ensure sufficient copper area on the PCB beneath the exposed pad for thermal dissipation. The status feedback is open-drain and requires a pull-up resistor. Fault conditions should be debounced in software to avoid nuisance trips during inrush events such as cold lamp filaments. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.
BTS5180-2EKA - 180mOhm Dual Smart High-Side Switch
The Infineon Technologies BTS5180-2EKA is a dual-channel PROFET smart high-side power switch with 180 mOhm RDS(ON), a 5 V to 28 V operating range, and two independently controlled output channels in a PG-DSO-14-40 exposed-pad package. It integrates N-channel vertical power MOSFETs, protective functions, and diagnostic circuitry for protected load control. A smart high-side power switch is a power-management semiconductor placed between a positive supply and a load. Unlike a basic MOSFET, it combines load switching with protection and status diagnosis, allowing an electronic control unit to command lamps, LEDs, motors, or resistive loads while detecting abnormal conditions. In the broader hierarchy, this device is a protected power-switch IC and automotive power-management component. The verified manufacturer information identifies two channels, 180 mOhm RDS(ON), and a 5 V to 28 V range. The low stated RDS(ON) supports lower conduction loss than a higher-resistance automotive switch when the load current and thermal conditions are suitable. The integrated protection and diagnosis functions reduce the need for separate fuses, current monitoring, and fault-detection circuitry, although each parameter must still be checked against the complete manufacturer datasheet. The BTS5180-2EKA uses vertical N-channel power MOSFETs in a Smart6 implementation. This architecture is intended for compact automotive high-side load-control designs where low on-resistance, diagnostic feedback, and protection are useful together. Its exposed pad provides a direct thermal path on the PCB, but correct land-pattern assembly and copper thermal design remain essential. Typical automotive uses include lamps, LEDs, and other 12 V loads where the controller requires protected switching and diagnostic information. The 5 V to 28 V operating range also makes the device relevant to broader automotive electrical environments, while the 180 mOhm RDS(ON) figure is the key published conduction-resistance value for load-current and thermal calculations. Designers should verify absolute maximum ratings, output-current limits, protection thresholds, timing, diagnostic behavior, and pin functions in the manufacturer datasheet before production. The exposed pad should be connected according to the recommended land pattern, and supply decoupling should be placed close to the device to limit loop inductance and switching transients.
BTS52001ENAXUMA1 - 200mΩ 1.5A Smart High-Side Switch | Infineon
The Infineon BTS52001ENAXUMA1 (sales code BTS5200-1ENA) is a 200 mΩ single-channel smart high-side N-channel power switch in a PG-TDSO-8-31 exposed-pad package, rated for 1.5 A continuous load current and qualified to AEC-Q100 for 12 V automotive applications. It integrates a vertical power MOSFET with charge pump, smart protective functions, and diagnostic feedback, all built on Infineon's Smart6 technology. The device is specifically designed to drive 1× R10W 12V lamps as well as LED loads. A high-side power switch (also called a smart high-side switch or PROFET) is a type of power distribution switch that sits between the battery/load supply and the load, controlling current flow with an integrated MOSFET and providing on-state diagnosis, over-current protection, and thermal shutdown. Smart high-side switches belong to the broader category of power distribution switches, which sit under power management ICs and semiconductor ICs. They differ from low-side switches (which sit between the load and ground) by offering better protection against short-to-ground and short-to-battery faults, making them the preferred topology in body-control modules, BCMs, and junction boxes. Key features include an active-high logic-level input, status feedback, open-load detection in OFF state, current limitation, over-temperature shutdown with auto-restart, and over-voltage protection including load-dump robustness. The integrated charge pump drives the N-channel MOSFET gate above the battery rail, achieving true low-RDS(on) high-side switching without external bootstrap components. The exposed-pad PG-TDSO-8-31 package provides a low thermal resistance path for dissipating load-current I²R losses. Typical applications include automotive body electronics (BCM, junction box), 12V R10W lamp drivers (turn indicator, rear lamp, interior lighting), LED driver modules for tail lamps and ambient lighting, and resistive/inductive load driving up to 1.5A. The diagnostic pin enables ECU-level fault detection of open-load, short-to-GND, and short-to-battery conditions - critical for ASIL-relevant functional safety analysis. When designing with this part, ensure the input pin is driven by a true logic-level signal (3.3V or 5V microcontroller GPIO is compatible) and add a small RC network on IN if the wiring harness is long. The exposed pad must be soldered to a copper area of at least 1 cm² to meet the datasheet's 31 K/W thermal resistance rating.
BTS52004EKAXUMA1 - 200mΩ Quad Smart High-Side Switch | Infineon
The Infineon BTS52004EKAXUMA1 is a 200 mΩ quad-channel Smart High-Side Power Switch housed in a PG-DSO-14-48-EP package with exposed pad for enhanced thermal dissipation. Each of the four independent channels integrates an N-channel vertical power MOSFET with charge pump, providing protective functions and diagnosis in a single IC. The device is built on Infineon's Smart6 technology and delivers up to 800 mA per channel continuous load current. A High-Side Power Switch (also called a smart power switch or PROFET) is a solid-state relay that connects a load to the positive supply rail. It combines a power MOSFET, gate driver, charge pump, current sensing, and protective circuitry (overload, short-circuit, overtemperature, overvoltage) into one package. It belongs to the broader hierarchy: power switch -> load driver -> PMIC -> power management IC -> semiconductor. Compared to a discrete MOSFET plus fuse, a high-side switch offers diagnostic feedback, programmable current limit, and self-protection without external components. Key features of the BTS52004EKAXUMA1 include four independently controlled channels with 200 mΩ typical on-resistance per channel, an operating voltage range up to 38 V (load dump tolerant), integrated short-circuit and overtemperature protection with auto-restart, and proportional load current sensing via the IS pin. The exposed thermal pad enables direct PCB heat spreading for sustained high-current operation. According to the Infineon datasheet, the device supports PWM frequencies up to 1 kHz and includes open-load detection in both on and off states. The BTS52004EKAXUMA1 uses a vertical N-channel DMOS output stage driven by an internal charge pump that generates the gate voltage above the battery rail. Smart6 technology integrates the charge pump, gate driver, sense current source, and protection logic on a single die, achieving high reliability in a compact PG-DSO-14 footprint. Each channel's protection state is independent, so a fault on one channel does not disable the others. Typical applications include automotive body modules (door modules, seat controllers, lighting), industrial 24 V PLC outputs, and any system requiring four protected high-side outputs from a single IC. The 38 V load-dump tolerance makes it directly suited to 12 V and 24 V automotive battery rails. When designing with the BTS52004EKAXUMA1, derate continuous current per channel based on PCB copper area and ambient temperature. A 2 cm² copper pour per channel is the typical minimum for full 800 mA operation at 85 °C ambient. The IS pin requires a sense resistor to ground, and the sense ratio is fixed by internal trimming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
BTS5210GXUMA1 - Dual 140mΩ Smart High-Side Switch | Infineon
The Infineon BTS5210GXUMA1 is a dual-channel smart high-side power switch housed in a 14-pin PG-DSO-14-37 package, integrating two vertical N-channel power MOSFETs rated at 140 mΩ on-resistance per channel. Each channel delivers up to 1.8 A continuous load current and the device supports CMOS-compatible logic inputs, status feedback, and embedded protection functions including current limiting, thermal shutdown, and overvoltage clamp. Designed for 12 V and 24 V automotive and industrial systems, it operates from 5.5 V to 40 V supply range and withstands load-dump transients per ISO 7637-1. A smart high-side power switch is a semiconductor device that connects a load to the positive supply rail while integrating protection, diagnostics, and driving functions into a single IC. In the broader power management hierarchy, it sits between a discrete MOSFET plus fuse and a fully programmable multi-channel PMIC; PROFET+ family parts such as the BTS5210G sit alongside eFuse ICs, low-side switches, and H-bridge drivers, all serving the role of controlled power distribution to actuators, lamps, and relays. Key features include very low standby current, fast demagnetization of inductive loads, stable behavior at undervoltage, and improved electromagnetic compatibility (EMC) for automotive EMI/ESD environments. The monolithic SIPMOS chip-on-chip technology combines the power stage and control logic on the same silicon, reducing footprint and parasitic inductance. Both channels feature independent diagnostic feedback for short-circuit, open-load, and overtemperature detection, allowing the host microcontroller to flag wiring faults before they damage downstream loads. Typical applications include automotive body electronics (door modules, mirror heaters, seat controllers), industrial 24 V PLC outputs, relay and solenoid replacement, LED string driving, and resistive/inductive load switching in harsh environments. The device is AEC-Q100 qualified for automotive use, making it suitable for safety-relevant and non-safety-relevant loads that require robust on-board diagnostics. When designing with the BTS5210GXUMA1, ensure the input pins are tied to valid logic levels (CMOS thresholds) and that the status outputs are pulled up to the logic supply. A small RC filter on the input pins is often used to suppress conducted noise. Thermal dissipation must be calculated using the worst-case on-resistance (140 mΩ) and the expected duty cycle of each channel. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, alternative cross-reference data, and practical PCB/thermal guidance beyond what the manufacturer datasheet alone provides, helping engineers select and qualify the part faster.