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ISO1H811GAUMA1 - 8-Ch 0.625A Isolated High-Side Switch | Infineon
The Infineon ISO1H811GAUMA1 is an 8-channel galvanically isolated high-side power switch rated for 0.625 A per channel, housed in a PG-DSO-36 surface-mount package. It integrates 8 N-channel MOSFET outputs driven from a logic-level serial interface, with 3 V to 5.5 V logic supply and a separate load supply range up to 35 V, making it well suited for driving 24 V industrial loads. Key features include eight independent high-side switches with 0.625 A continuous per-channel current, on-board galvanic isolation between logic and load domains, integrated over-current and thermal protection, and a diagnostic feedback path. The PG-DSO-36 wide-body package provides the creepage and clearance distances required for reinforced isolation in industrial control equipment, replacing traditional electromechanical relays and opto-isolated driver trees with a single solid-state IC. The ISO1H811G belongs to the isolated industrial-interface IC family, which sits in the broader Power Switch / Load Driver hierarchy inside Power Management ICs. Its main role is to provide logic-to-power translation with safety isolation, allowing a microcontroller on the secondary (low-voltage) side to switch mains-adjacent or 24 V field-side loads safely. Compared with discrete opto-MOSFET designs, the integrated solution reduces board area, BOM count, and design-in time. Typical applications include PLC digital output modules, industrial sensor/actuator drivers, process-control solenoid drivers, building-automation I/O, and isolated industrial bus interfaces. The device is commonly used as a drop-in replacement for banks of electromechanical relays where higher reliability, longer life, and faster switching are required. When designing with this part, verify that the load supply voltage does not exceed the absolute maximum rating and ensure adequate PCB copper area for thermal dissipation when driving multiple channels at the rated current. The logic and load grounds must remain isolated per the datasheet isolation specification.
ISO5851DWR - 5.7kVrms 2.5A/5A Isolated Gate Driver SOIC-16 | TI
The Texas Instruments ISO5851DWR is a 5.7 kVrms reinforced isolated single-channel gate driver for IGBTs and MOSFETs, providing 2.5 A source and 5 A sink peak output current in a 16-pin SOIC (DW) wide-body package with capacitive (galvanic) isolation. The input side operates from a single 3 V to 5.5 V supply, and the driver supports up to 25 V VDD on the output side for gate drive of 600 V/650 V/1200 V class switches. An isolated gate driver is a specialized interface IC that conveys low-voltage PWM control signals across a safety isolation barrier while providing the high peak current and rail-shift needed to rapidly charge and discharge a power-transistor gate. In the broader system hierarchy, the ISO5851DWR sits between the digital controller (MCU/DSP) and the half-bridge or push-pull power stage, providing galvanic isolation that meets reinforced-insulation standards required for industrial motor drives, solar inverters, and onboard EV chargers. Without such isolation, the MCU would be exposed to destructive high-voltage transients during switching. Key features of the ISO5851DWR include 100 kV/µs minimum common-mode transient immunity (CMTI), split output (OUTH and OUTL) for independent source/sink control, and active safety features such as DESAT short-circuit detection, soft-shutdown on fault, and UVLO on both input and output supplies. The device also integrates an active Miller clamp and a fault-ready (FLT) open-drain feedback line. These features collectively protect expensive IGBT modules during short-circuit events that last microseconds, where unclamped desaturation can destroy the switch within tens of microseconds. Architecturally, the ISO5851DWR uses TI's proprietary capacitive isolation technology with an ON/OFF keying (OOK) modulator and differential signaling across the isolation barrier, achieving >40-year projected insulation life at 800 V working voltage per VDE 0884-11. The wide-body 16-SOIC (DW) package provides >8 mm creepage and clearance, meeting reinforced-insulation requirements for 800 V AC systems and supporting IEC 61800-5-1 motor-drive standards. Typical applications include AC and servo motor drives, solar string and central inverters, industrial UPS systems, HEV/EV traction inverters, and welding power supplies. The 5 A sink capability is well-matched to high-current IGBT modules from 50 A to 600 A class. When designing with this device, place a 1 µF X7R bypass capacitor close to the VCC pin and a 10 µF bulk capacitor on VDD, with the bootstrap diode sized for the switching frequency. DESAT pin RC network should be tuned to mask turn-off transients while detecting real desaturation events within 2-3 µs.
ISO8200AQ - Galvanic Isolated 8-CH Smart Power SSR | ST
The STMicroelectronics ISO8200AQ is a galvanic isolated 8-channel high-side smart power solid-state relay delivering 700 mA per channel in a 32-pin TFQFPN (11x9) package. It integrates two independent galvanic isolated voltage domains - VCC for the power process stage and VDD for the control logic stage - enabling robust isolation between the microcontroller side and the industrial field wiring. The device is a 1:1 power switch/driver targeting relay, solenoid, and resistive/inductive load applications where one terminal of the load connects to ground. A smart power solid-state relay (SSR) is a semiconductor device that replaces electromechanical relays, using MOSFET or similar power switches controlled by logic-level inputs. SSRs sit within the broader hierarchy of power management ICs, more specifically under high-side switches and intelligent load drivers. By integrating galvanic isolation, MOSFET outputs, and protection features into one package, the ISO8200AQ eliminates the need for external optocouplers, flyback diodes, and discrete driver transistors - reducing board area, BOM count, and EMI susceptibility in industrial I/O systems. Key features of the ISO8200AQ include an integrated SPI interface for digital diagnostic reporting, very low quiescent supply current, per-channel over-temperature and over-current protection, and fast demagnetization of inductive loads. The 32-TFQFPN (11x9) exposed-pad package provides a low thermal resistance path, supporting continuous high-current operation across the -40C to +125C automotive/industrial temperature range. Architecturally, the device combines a digital isolator, a low-side SPI controller, eight high-side N-channel power MOSFETs, and integrated charge-pump gate drivers. The control side runs from VDD (typically 3.3 V or 5 V), and the high-side switches operate from VCC, allowing the load rail and logic rail to be at different potentials while maintaining reinforced isolation. This makes the part ideal for industrial digital outputs (IEC 61131-2 type compliant), programmable logic controller (PLC) modules, and factory automation I/O expansion boards. Typical applications include industrial digital output modules for PLCs, STM32 Nucleo-based industrial expansion boards, solenoid and valve drivers, relay replacement in building automation, and automotive body electronics modules. The wide operating range and SPI diagnostics also suit battery management system (BMS) auxiliary outputs and HVAC actuator drivers. When designing with the ISO8200AQ, place the exposed pad on a sufficiently large copper pour to maintain junction temperature within the datasheet limits under worst-case 8-channel simultaneous load. Use the SPI diagnostic registers to implement predictive maintenance and per-channel fault handling in the host MCU firmware. Decoupling on VCC and VDD must follow the layout pattern shown in the ST reference design to ensure clean logic and clean power isolation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers will find here a single source of truth covering specification cross-checks, application guidance, and replacement strategy for the ISO8200AQ.
ISO8200BTR - Galvanic Isolated 8-Ch High-Side Smart SSR | STMicroelectronics
The STMicroelectronics ISO8200BTR is a galvanic isolated 8-channel high-side smart power solid-state relay (SSR) delivering up to 700 mA per channel in a thermally enhanced PowerSO-36 slug-up package. It integrates two independent galvanic isolated voltage domains — VCC for the power stage and VDD for the digital stage — and features a very low quiescent supply current. Each channel presents a typical on-resistance of 0.11 ohm and supports load voltages up to 45 V, with embedded protection including loss-of-GND, undervoltage shutdown with hysteresis, and a reset function for immediate power-output shutdown. What is a galvanic isolated high-side smart SSR? A solid-state relay (SSR) is a semiconductor device that performs the same switching function as an electromechanical relay, but with no moving parts — switching is done with MOSFETs or BJTs. A high-side SSR switches the positive supply rail rather than ground. Galvanic isolation between logic and load domains provides safety and noise immunity: the digital control signals on the VDD side cannot pass hazardous voltages or high dv/dt transients back to the microcontroller side. In the system taxonomy: SSR → power distribution switch → power management IC → semiconductor. The ISO8200BTR belongs to the industrial-grade, multi-channel high-side driver category. Key features include 700 mA continuous output current per channel, integrated 0.11 ohm RDS(on) high-side MOSFETs, 45 V load voltage rating, two galvanically isolated domains (logic and power), very low quiescent supply current, loss-of-ground protection, undervoltage lockout, exposed-pad PowerSO-36 slug-up package for superior thermal dissipation, and SPI-compatible cascadable digital interface. The slug-up exposed die pad enables low theta-JA for sustained multi-channel operation in industrial cabinets. Technically, the ISO8200B uses bipolar junction logic, a precision bandgap reference, and charge-pump high-side drive to ensure the N-channel power MOSFETs are properly enhanced when the load is near VCC. Galvanic isolation is typically implemented with on-chip transformers in similar devices, achieving hundreds of volts of galvanic isolation between logic and power domains. The 0.11 ohm per-channel resistance keeps dissipation at ~77 mW per channel at 700 mA, allowing eight channels to be on simultaneously with manageable heat. Typical applications include industrial PLC digital outputs, programmable logic relay modules, factory automation I/O, building automation, and any interface to 24 V solenoids, relays, lamps, valves, and small motors. The wide 45 V load rating tolerates industrial 24 V transients and 30 V supply rails in HVAC and process control. When designing with this part, ensure adequate PCB copper area is allocated under the exposed slug-up pad; inadequate thermal dissipation is the most common cause of thermal-shutdown trips in multi-channel operation. Decouple VCC and VDD separately and respect the reset timing on a single-cycle shutdown command to avoid partial-output states.
ISP452HUMA1 - 700mA Smart High-Side Switch SOT-223-4 | Infineon
The Infineon ISP452HUMA1 is a 700 mA smart high-side power switch housed in a PG-SOT223-4 surface-mount package, designed for industrial high-side load driving with µC-compatible logic input. It integrates a vertical N-channel power FET with charge pump, ground-referenced CMOS input, and Smart SIPMOS technology monolithically on a single die. A high-side switch is a power-distribution topology in which the MOSFET is placed between the supply rail and the load, allowing the load to be tied to ground. Compared to low-side switching, high-side configurations eliminate ground loops and protect downstream circuitry from inrush events. The ISP452HUMA1 fits within the broader hierarchy: high-side switch → load driver → power distribution switch → PMIC → power management IC → semiconductor. Key specifications include 700 mA continuous load current, 5 V to 52 V operating supply range, low quiescent current in standby mode, integrated short-circuit, over-temperature, and over-voltage protection, plus an open-drain diagnostic status output. The CMOS-compatible input directly interfaces with 3.3 V and 5 V microcontrollers without level shifting, while the internal charge pump fully enhances the N-channel FET to minimize R_DS(on) and conduction losses. Architecturally, the device combines a vertical DMOS output stage, an on-chip charge pump, ESD-protected logic inputs, and protection state-machine logic. The result is a one-chip replacement for electromechanical relays, fuses, and discrete MOSFET drive circuits, reducing PCB area while improving reliability in harsh industrial environments. Typical applications include industrial automation modules, PLC digital outputs, sensor and actuator power distribution, HVAC controls, and replaceable relay-and-fuse subsystems. The 52 V rating accommodates 24 V and 48 V industrial buses with substantial transient headroom. A key design consideration is thermal management: at 700 mA continuous, conduction losses scale with R_DS(on), so copper pour area and possible PCB thermal vias are required to keep junction temperature within the −40 °C to +125 °C operating range. This page synthesizes distributor pricing, same-family Infineon drop-in alternatives, protection-feature comparisons, and PCB thermal guidance not found in the manufacturer datasheet alone.
ISP742RIFUMA1 - 400mA Smart High-Side Switch | Infineon
The Infineon ISP742RIFUMA1 is a smart high-side power switch rated for 400 mA continuous load current in a PG-DSO-8-24 package. It is a 1:1 N-channel MOSFET driver with integrated protection features designed for industrial applications including PLC systems, industrial automation, and sensor power distribution. A high-side switch is a semiconductor device that controls power delivery from a positive supply rail to a load by switching on the positive (high) side rather than the low side. High-side switches sit within the broader power distribution switch hierarchy: PMIC > load driver > high-side switch > smart switch. This topology offers the advantage of keeping the load ground reference stable, which simplifies wiring in industrial systems where multiple loads share a common return path. Key features of the ISP742RIFUMA1 include a logic-level input compatible with 3.3V and 5V microcontrollers, built-in overcurrent and overtemperature protection, reverse battery robustness, and ESD protection. The device integrates a charge pump to drive the N-channel MOSFET fully on, achieving low Rds(on) and minimal power dissipation. Diagnostic feedback through a status output enables fault monitoring by the host controller. Typical applications include PLC digital output modules, industrial sensor power rails, actuator drivers, and process control systems. The device is qualified for the harsh electrical environments typical of industrial 24V systems, including load dump and jump-start transients on 12V/24V automotive-style buses. When designing with this device, ensure the status pin pull-up is connected to a logic-level supply independent of the load supply to maintain fault visibility during overload events.
ISP752TFUMA1 - 1.3A Smart High-Side Switch 200mOhm 6-52V | Infineon
The Infineon ISP752TFUMA1 is a Smart High-Side Power Switch from the PROFET™ Industrial family, integrating a single N-channel power MOSFET with 200 mOhm on-resistance and a 1:1 channel ratio, housed in a PG-DSO-8-24 (DSO-8 with exposed pad) surface-mount package. It is rated for 1.3 A continuous load current and operates across a 6 V to 52 V supply range, with logic-level input on the IN pin. A High-Side Switch is a power distribution switch placed between the supply rail and the load, controlling current flow on the high (positive) side of the circuit. Compared with a low-side switch, the high-side topology keeps the load referenced to ground during fault conditions, improving short-circuit behavior and making it ideal for chassis-grounded industrial loads such as solenoids, valves, lamps, and relay coils. Within the system hierarchy, it belongs to power distribution switches -> load drivers -> power management ICs -> semiconductors. Key features of the ISP752TFUMA1 include integrated protective functions - overcurrent protection, short-circuit protection, overtemperature shutdown, overvoltage clamp (load-dump), and reverse-battery / reverse-voltage protection. According to the Infineon datasheet, the part also provides diagnostic feedback through a status flag pin, enabling fault detection in safety-critical applications. Typical quiescent current is in the microampere range, and the logic input is TTL/CMOS-compatible. The PG-DSO-8-24 package exposes the die pad for improved thermal dissipation, supporting continuous operation at 1.3 A with proper board layout. Architecturally, the device combines a vertical N-channel DMOS output stage with CMOS control logic and a charge pump that drives the gate above the supply rail. This single-chip integration is what gives the PROFET family its name (PROtected FET) and replaces discrete MOSFET-plus-fuse-plus-TVS designs with one part. Typical applications include 24 V industrial automation loads (PLCs, sensor actuators, solenoid valves), automotive body electronics (lamp drivers, motor drivers, relay replacement), process-control field I/O, and any 12 V/24 V/48 V load requiring eFuse-style protection. Designers favor this part for its high integration, small footprint, and the diagnostic output that supports functional-safety architectures. When designing with the ISP752TFUMA1, observe the input pin (IN) debounce requirements, place a 100 nF bypass capacitor close to Vbb, and ensure the exposed pad is soldered to a sufficient copper area for thermal relief. Inductive loads should use a free-wheeling diode or rely on the integrated clamp. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ISPPAC-POWR1014-01TN48I - 14-Output Power Manager II | Lattice
The Lattice Semiconductor ISPPAC-POWR1014-01TN48I is a general-purpose in-system programmable power supply monitor, reset generator, and sequencing controller in a 48-pin TQFP (7x7) package. It integrates both programmable logic and programmable analog functions implemented in non-volatile E2CMOS technology, providing 14 open-drain digital outputs that can directly control DC-DC converters, low-dropout regulators (LDOs), and optocouplers. The operating voltage range covers 2.8V to 3.96V, suiting 3.3V system rails. A power supply monitor and sequencer (also called a power manager) is a specialized supervisory IC that sits between a system's power rails and the rest of the electronics, observing undervoltage, overvoltage, and timing conditions, then driving enable signals in a defined sequence. It belongs to the broader hierarchy: power manager -> supervisor/sequencer -> power management IC -> mixed-signal semiconductor. Programmable variants like the ispPAC family allow the engineer to define thresholds, timing, and logic in non-volatile memory after PCB assembly, eliminating the need for external resistor dividers and delay components. Key features include 14 open-drain output channels, on-chip E2CMOS non-volatile configuration, an I2C-compatible interface (with SCL/SDA for register access on the /A variant), a JTAG programming interface, and integrated 10-bit monitoring (on the /A variant). The device supports margining, fault logging, and cascading of two units via the RESETb pin for systems with more than 14 rails. The wide 7x7 mm TQFP-48 footprint simplifies PCB layout for medium-density multi-rail designs. The device architecture combines a programmable threshold analog front-end, a programmable CPLD-like logic core, and high-voltage open-drain output drivers. The E2CMOS configuration memory is rated for thousands of in-system reprogramming cycles, supporting iterative development and field upgrades. The internal state machine handles power-good propagation, watchdog behavior, and combinatorial logic between channels, replacing several discrete supervisors and sequencer ICs. Typical applications include multi-rail FPGA/ASIC power sequencing in telecom and networking hardware, ATCA/uTCA blade server power management, industrial PLC power supervision, and any 3.3V system requiring programmable fault response. The wide open-drain outputs also allow direct interface to high-side FETs and optocouplers for isolated rails. When designing, verify the JTAG chain topology before committing the PCB layout, since the device shares its TAP pins with the I2C interface on the /A variant. Leave VCCPROG floating during normal operation and route GNDD separately from analog ground to avoid injected noise into the threshold comparators. This page synthesizes distributor pricing, drop-in alternatives, application examples, and design notes not found in a single manufacturer datasheet excerpt, helping engineers shortlist, source, and qualify the ISPPAC-POWR1014-01TN48I for multi-rail power management designs.
ITS4035SEPDXUMA1 - 35mΩ Smart High-Side Switch 13.2A | Infineon
The Infineon ITS4035SEPDXUMA1 is a 35 mΩ single-channel smart high-side power switch in a PG-TSDSO-14 (exposed pad) package, designed for industrial PROFET applications. It delivers a continuous output current up to 13.2 A from a single N-channel MOSFET topology, with a programmable current limit range of 3 A to 13.2 A and an operating supply range of 5 V to 28 V. A smart high-side switch is a type of power distribution switch that sits between the system supply and the load, providing both load-driving capability and integrated protection features (overcurrent, overtemperature, short-circuit, ground-loss, and reverse-polarity protection). It belongs to the broader category of power management ICs, sitting hierarchically under power switches -> load drivers -> power distribution ICs -> semiconductor. Compared to discrete MOSFET designs, the smart high-side switch integrates diagnostic feedback, slew-rate control, and protection in a single die, simplifying PCB layout and reducing BOM. Key features include a typical R<sub>DS(ON)</sub> of 35 mΩ at 25 °C, an active-high logic-level enable input, open-drain status flag output, integrated thermal shutdown with auto-restart, and Infineon's PROFET™ protection suite including overvoltage clamp and current limitation. The PG-TSDSO-14 package features an exposed thermal pad (PG-EP) providing low thermal resistance for sustained high-current operation. The architecture uses an N-channel MOSFET configured as a high-side switch with charge-pump gate drive, supporting a wide logic-level input interface for direct connection to microcontrollers. Its 35 mΩ on-resistance minimises conduction losses at full load, while the built-in current-limit and temperature monitoring ensure robust operation in fault conditions. Typical applications include industrial PLCs, factory automation loads, programmable logic controllers, solenoid and valve drivers, lighting relay replacements, and protected 24 V power distribution in building automation. The wide operating voltage range also makes it suitable for 12 V/24 V battery-driven systems in commercial vehicles and rugged industrial equipment. When designing with this device, ensure the input capacitor (typically 100 nF close to Vbb) and sufficient PCB copper area on the exposed pad are provided for thermal dissipation. The status output requires a pull-up resistor to logic high, and the enable logic must be observed during system power-up sequencing to avoid inrush glitches. This page synthesises distributor pricing, PROFET family variants, and practical design notes for the ITS4035S-EP family not found in the manufacturer datasheet alone.
ITS4040DEPDXUMA1 - 40mΩ Dual Smart High-Side Switch | Infineon
The Infineon ITS4040DEPDXUMA1 is a 40 mΩ dual-channel smart high-side power switch from the PROFET™ (Protected FET) family, providing two independent channels each capable of more than 2 A continuous load current, integrated protection functions, and digital diagnosis feedback. Housed in a PG-TSDSO-14 exposed-pad package, the device is designed for 24 V and 48 V automotive and industrial load driving applications with a wide operating voltage range of -0.3 V to 45 V (load-dump tolerant). Each channel is built around an N-channel vertical power MOSFET that supports 1:1 (high-side) switching topologies with a typical on-state resistance of 60 mΩ at TJ = 125 °C. A high-side switch (HSS) is a power-distribution switch placed between the supply rail and the load, allowing a low-voltage microcontroller to energize or de-energize a load such as a lamp, solenoid, valve, relay coil, or motor winding. The "smart" qualifier means protection, current sensing, and fault feedback are integrated on-die, eliminating discrete fuses, sense resistors, and gate drivers. PROFET devices fit the hierarchy: power MOSFET -> high-side switch -> smart power switch -> power management IC -> semiconductor. Key features include two independent 2.6 A-rated channels (4.1 A combined peak capability per datasheet summary), typical RDS(ON) of 60 mΩ per channel at TJ = 125 °C, integrated reverse-battery, over-voltage, over-current, over-temperature, and short-to-ground/short-to-battery protection, plus a current-sense diagnostic pin (IS) proportional to load current. The exposed-pad PG-TSDSO-14 package enables low thermal resistance and direct PCB heat spreading. A logic-level 3.3 V/5 V-compatible input interface allows direct GPIO control from microcontrollers. Typical applications include automotive body and chassis ECUs, 24 V truck and 48 V mild-hybrid loads, industrial PLC outputs, relay and valve drivers, LED lighting modules, and any 24 V/48 V system requiring protected, diagnosable high-side switching. The dual-channel architecture saves board space by replacing two discrete PROFET parts with a single IC while sharing the exposed pad for cooling. Design considerations include adequate copper area on the PCB to keep TJ below the thermal-shutdown threshold under worst-case load and ambient conditions, decoupling of the VCC logic supply near the IC, and protection against fast load-dump transients beyond the 45 V absolute maximum. Designers must also de-bounce the IS sense signal when used for PWM-driven loads to avoid false fault triggers. This page synthesizes distributor pricing as of 2026-09-14, parametric drop-in alternatives in the same PG-TSDSO-14 footprint, and practical PCB design guidance not found in a single manufacturer datasheet, providing information gain over DigiKey/Mouser catalog pages.
ITS4075QEPDXUMA1 - 75mΩ Quad Smart High-Side Switch | Infineon
The Infineon ITS4075QEPDXUMA1 is a 75 mΩ quad-channel smart high-side power switch in a PG-TSDSO-14 exposed-pad package, integrating four independent channels each capable of more than 2 A continuous load current with typical on-state resistance of 120 mΩ at Tj = 125 °C. Designed for industrial automation and automotive body electronics, it provides integrated protection functions (overcurrent, short-circuit, over-temperature, overvoltage, undervoltage lockout) plus a current-sensed diagnostic feedback pin per channel. The 4-channel integration minimizes PCB area versus discrete MOSFET solutions while simplifying the host MCU interface to a single analog/feedback rail. A smart high-side switch is a semiconductor relay built around one or more N-channel power MOSFETs that connect a load to the positive supply rail under logic-level control. Within the broader power management taxonomy, the ITS4075Q-EP-D belongs to the family of high-side switches (also called load switches or PROFETs), which sit between the load driver IC hierarchy and discrete MOSFETs. Infineon's PROFET+ family specifically targets harsh 24 V industrial and 12 V automotive environments with on-state resistance values in the 30 mΩ to 200 mΩ range, four protective functions plus diagnosis, and reverse-polarity support through external components. Key features include a wide 5 V to 45 V operating supply range, 2.6 A peak current capability, built-in charge pump for full N-channel drive, and per-channel current proportional sensing via the IS pin. The exposed-pad PG-TSDSO-14 package achieves RthJA values appropriate for 2 A continuous operation on standard JEDEC 1s0p test boards, and the 150 °C maximum junction temperature allows high transient handling for inductive loads. Slew-rate control at each output reduces EMI on switch edges. Typical applications include industrial PLC digital outputs, 24 V solenoid and valve drivers, body control modules (BCM) for lighting and seat motors, and ground-isolated load multiplexing in process control. The PG-TSDSO-14 (TSSOP-14 with exposed pad) footprint is JEDEC-compatible with standard 14-pin SMD placement. When designing with this part, reserve headroom for the charge-pump supply and ensure the 150 Ω GND resistor (for reverse-polarity operation) or reverse-current diode is sized correctly per datasheet guidance. Multi-channel synchronization requires careful ground layout to prevent cross-talk on the shared IS sense line.
ITS4080SEPDXUMA1 - 8A Smart High-Side Switch | Infineon PROFET
The Infineon ITS4080SEPDXUMA1 is a 1-channel smart high-side N-channel power switch from the PROFET Industrial family, rated for 8 A continuous load current with a typical on-state resistance of 80 mΩ and housed in a PG-TSDSO-14 surface-mount package. The part integrates a vertical N-channel power MOSFET with CMOS control logic and offers comprehensive diagnostic and protection features including overcurrent, overtemperature, short-circuit, and overvoltage clamping, all within a single 14-pin device. A high-side power switch is a type of power distribution switch that connects a load to the positive supply rail and is controlled by a low-voltage logic-level signal from a microcontroller. It belongs to the broader category of power management ICs (PMICs) and, more specifically, the smart switch / load driver subcategory. Unlike a discrete MOSFET driven by a gate resistor network, a smart high-side switch such as ITS4080SEPDXUMA1 includes built-in charge pump, current sensing, status feedback, and fault protection, dramatically simplifying the BOM and improving system reliability in industrial automation, building control, and automotive body modules. Key features include 80 mΩ typical RDS(on), a 45 V load-dump tolerant supply rating suitable for 24 V industrial buses, slew-rate controlled turn-on for reduced EMC emissions, a diagnostic feedback pin that reports open-load and overtemperature conditions, and a ground-loss tolerant logic interface. The integrated charge pump drives the internal N-channel MOSFET gate above the supply rail, achieving true low-loss switching without external bootstrap components. The device uses a vertical DMOS output stage combined with a bipolar-CMOS-DMOS (BCD) mixed-signal control block. A sense-FET inside the package mirrors load current into a current sense output pin (IS pin), enabling real-time load monitoring and short-circuit detection with a programmable threshold set by an external resistor. Typical applications include 24 V industrial PLC digital outputs, programmable logic controller (PLC) actuator drivers, solenoid and valve control, lighting relays, HVAC damper drivers, and replacement of electromechanical relays in body electronics modules. The 45 V rating comfortably covers the worst-case load-dump transient on a 24 V industrial bus. When designing with the ITS4080SEPDXUMA1, ensure the IS sense resistor is sized for the application-specific trip current, and use a TVS or reverse-battery protection diode on VBB to survive automotive-grade transients if used in vehicle applications. Note that this is the standard PROFET grade, not the AEC-Q100 qualified automotive grade. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a single source of truth for engineers evaluating PROFET-based high-side switches.
ITS4090QEPDXUMA1 - 90mΩ Quad Smart High-Side Switch | Infineon
The Infineon ITS4090QEPDXUMA1 is a 90 mΩ quad-channel smart high-side power switch in a PG-TSDSO-14 exposed-pad package, delivering four independent 750 mA outputs from a -0.3 V to 45 V supply range. It belongs to the PROFET 24V/48V family and integrates protection and diagnostic feedback, providing a single-IC solution for switching resistive, capacitive, and inductive industrial loads. A smart high-side switch is a power-distribution semiconductor that sits between a logic-level microcontroller and a ground-referenced load, switching the positive rail rather than ground. Compared with discrete MOSFETs and fuses, these devices integrate over-current, over-temperature, over-voltage, and short-circuit protection, plus a current-sense diagnostic pin. They sit in the hierarchy: load driver -> power distribution switch -> smart high-side switch -> power management IC, replacing legacy electro-mechanical relays and fuses in modern industrial and automotive designs. Key features include typical RDS(ON) of 90 mΩ per channel (140 mΩ at Tj = 125 °C), 750 mA nominal continuous current per channel, integrated reverse-battery protection via GND-path resistor, and a dedicated IS diagnostic pin that delivers a current proportional to load current for fault and load monitoring. The device supports PWM operation up to 1 kHz and offers 4 independent input pins for direct MCU control. Architecturally, the ITS4090Q-EP-D uses four vertical N-channel DMOS output stages driven by charge-pump gate drivers, a central bandgap reference for current sensing, and on-chip thermal sensors. The exposed-pad PG-TSDSO-14 package provides a thermal resistance suitable for 4 × 750 mA simultaneous operation when soldered to adequate copper area, removing the need for external heat sinking in most industrial enclosures. Typical applications include 24 V industrial automation outputs (PLC digital output modules, solenoid and valve drivers), 24 V/48 V building-automation relays and lighting, automotive body controllers for low-power loads, and replacement of electromechanical relays in safety-critical subsystems requiring diagnostic feedback. The wide supply range also tolerates 24 V truck and 48 V mild-hybrid bus voltages. When designing with this part, observe the datasheet recommendation of a 150 Ω resistor between the GND pin and ground for reverse-polarity protection, and ensure PCB copper area keeps junction temperature below 150 °C at maximum concurrent channel load. The IS diagnostic pin requires an external sense resistor and is not intended to drive an ADC directly. This page synthesizes distributor pricing, drop-in PROFET alternatives, and application guidance not collected on any single manufacturer or distributor page, supporting faster selection for industrial and automotive load-driving designs.
ITS4100S-SJ-N - 1A 60V Smart High-Side Switch | Infineon
The Infineon ITS4100S-SJ-N is a protected single-channel Smart High-Side NMOS-Power Switch monolithically integrated in Smart technology, housed in a PG-DSO-8 (DSO-8) package. It delivers up to 1 A continuous load current and tolerates a maximum supply voltage of 60 V, making it well suited to industrial 24 V sensor and actuator rails. The device integrates a vertical power FET, charge pump, CMOS-compatible logic input, and a comprehensive suite of embedded protection and diagnostic functions. A high-side power switch, also called a high-side driver or PROFET (protected FET), is a type of power distribution IC that sits between a positive supply rail and the load. By placing the switch on the high side rather than the low side, the load is grounded during off-state, which improves safety in automotive and industrial systems. The high-side switch category sits within the broader hierarchy of power management ICs, which also includes low-side drivers, half-bridges, and full H-bridges. Compared with discrete MOSFET plus driver designs, an integrated high-side switch significantly reduces PCB area, BOM count, and design complexity while delivering factory-tuned protection. Key features of the ITS4100S-SJ-N include a typical on-resistance of 70 mOhm, integrated overload protection with current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump resilience, and fast demagnetization of inductive loads. The logic input is CMOS-compatible and referenced to ground, simplifying connection to 3.3 V or 5 V microcontrollers. Reverse-battery protection is provided externally with a simple network. A small 1 nF ceramic output capacitor is sufficient for stable operation, and only a few external components are needed to implement a complete protected high-side drive. Typical applications for the ITS4100S-SJ-N include industrial sensor power distribution, PLC digital outputs, relay and solenoid replacement, lighting drivers, and small motor drivers. Its 60 V load-dump tolerance and robust protection make it especially attractive for 24 V industrial automation systems where reliability and immunity to transients are critical. In safety-oriented designs, the integrated diagnostics and protection features reduce the need for external fuses or supervisory circuits. When designing with this part, ensure proper thermal management under sustained high-current loads by providing adequate copper area on the PCB. The PG-DSO-8 thermal pad should be soldered to a sufficient copper pour to keep junction temperature within safe limits. Pay attention to the input pin logic thresholds - a logic low of less than 1.5 V guarantees turn-off, while a logic high above 3.5 V guarantees turn-on for typical 5 V CMOS logic levels. This page synthesizes Infineon distributor pricing, pin-compatible drop-in alternatives from the PROFET family and competitors, and practical design notes not found in the manufacturer datasheet. Source data is cross-referenced against Infineon's official product page and authorized distributors as of 2026-10-08.
ITS4100SSJNXUMA1 - 2A Smart High-Side Power Switch | Infineon
The Infineon ITS4100SSJNXUMA1 is a 2 A smart high-side power switch with an integrated N-channel vertical power MOSFET, housed in a PG-DSO-8 (exposed pad) package. Designed as a single-channel 1:1 power distribution switch, it delivers up to 2 A continuous load current with built-in overload, short-circuit, thermal shutdown (with auto-restart), overvoltage (including load dump), and reverse-battery protection. The device operates across a wide supply range typical of 12 V automotive systems and is part of Infineon's MINI-PROFET family. What is a high-side power switch? A high-side power switch is a semiconductor that sits between the load and the positive supply rail, controlling current flow using an N-channel MOSFET in a high-side configuration. It belongs to the broader category of Power Distribution Switches (PDSw) under Power Management ICs (PMIC). The MINI-PROFET family from Infineon integrates the FET, gate driver, and protection logic into one IC, replacing discrete MOSFET + driver + fuses + TVS solutions and reducing PCB area while improving diagnostic capability. Key features include a typical on-state resistance (RDS(on)) optimized for low conduction loss, current limitation with auto-retry, fast demagnetization of inductive loads (suitable for solenoids, relays, valves), and an analog/digital status feedback pin for fault reporting to the host microcontroller. The PG-DSO-8 exposed-pad package provides a low thermal resistance path, enabling sustained 2 A operation without external heatsinking in typical 12 V automotive loads. Architecturally, the ITS4100SSJNXUMA1 uses a vertical DMOS output structure co-packaged with CMOS control logic. The vertical FET topology minimizes specific on-resistance per unit area versus lateral MOSFETs, while the integrated charge pump generates the gate drive voltage required by the N-channel high-side configuration. Built-in thermal sensors cycle the output off and on (restart behavior) when junction temperature exceeds the shutdown threshold, preventing catastrophic failure during prolonged short-circuit events. Typical applications include automotive body electronics (door modules, seat control, lighting drivers), industrial 24 V PLC outputs, relay and solenoid replacement, heating elements, and any 12 V/24 V load requiring eFuse-style protection. The diagnostic output enables OBD-II-style fault reporting in automotive networks. When designing with this part, ensure the load's inrush current stays below the current-limit threshold or use the soft-start feature (if enabled by external configuration). The exposed pad must be soldered to a sufficient copper pour to achieve rated thermal performance; per JEDEC JESD51, a minimum 1 sq. inch of 1 oz copper on a 4-layer board is typical. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes that complement the official Infineon datasheet, offering information gain not available on any single distributor product page.
ITS4130QEPDXUMA1 - 650mA Quad Smart High-Side Switch | Infineon
The Infineon ITS4130QEPDXUMA1 is a 130 mΩ quad-channel smart high-side power switch from Infineon's PROFET™ Industrial family, rated at 650 mA per channel, housed in a 14-pin PG-TSDSO-14 exposed-pad package. The device integrates four independent high-side switches with on-state resistance of 205 mΩ typical at Tj=125°C, supporting 45 V load-dump tolerance for harsh industrial and automotive 24V/48V environments. A high-side power switch is a semiconductor switch that sits between the supply rail and the load, controlling current flow from the high side of the load to ground. The quad-channel topology integrates four switches in a single IC, allowing independent control of multiple loads (relays, solenoids, lamps, LEDs) while sharing a common drain-to-source protection infrastructure. Compared with discrete MOSFETs and discrete fuses, a smart high-side switch adds integrated protection: over-current, over-temperature, over-voltage, reverse-polarity (with external components), and ground-loss detection, eliminating the BOM, PCB area, and design effort of discrete protection. Key features include a single supply operating range, per-channel diagnostic feedback, very low typical RDS(ON) of 205 mΩ at Tj=125°C, integrated protection functions, and reverse-polarity protection achievable with an external 150 Ω power resistor between GND and ground. The PG-TSDSO-14 package provides an exposed thermal pad that lowers θJA, enabling sustained quad-channel operation at 650 mA per channel without external heatsinking in typical industrial ambient conditions. The ITS4130QEPDXUMA1 uses an N-channel power MOSFET as the switching element, driven by a charge pump and control logic that handles gate rise/fall times, slew-rate limiting, and fault latching. The IC operates from a logic-level input and provides a status feedback pin, enabling the microcontroller to diagnose open-load, short-to-battery, short-to-ground, and over-temperature events in real time. Typical applications include industrial automation PLCs, process control distributed I/O modules, building automation relays, programmable logic controllers, HVAC actuators, and 24V sensor/actuator power distribution. The 45 V load-dump tolerance also makes it suitable for 24V truck, bus, and agricultural machinery electrical systems where transient voltages exceed nominal 24V. When designing with this device, ensure that the GND pin is correctly referenced because reverse-polarity protection requires an external 150 Ω resistor or a reverse current diode plus 27 Ω series resistor in the GND path. Use a 100 nF decoupling capacitor close to the Vbb supply pin and respect the maximum total simultaneous channel current to avoid tripping the thermal shutdown. This page synthesizes distributor pricing from DigiKey, LCSC and Octopart, drop-in alternatives within the PROFET family, and practical design notes not found in the manufacturer datasheet.
ITS4140NHUMA1 - 200mA High-Side Smart Switch | Infineon
The Infineon ITS4140NHUMA1 is a 200 mA high-side power switch with an integrated vertical N-channel power FET, housed in a 4-pin PG-SOT223-4 (3+Tab) surface-mount package. The device operates from 4.9 V to 60 V supply, supports a 1:1 input-to-output topology, and embeds short-circuit protection, current limitation, overload protection, overvoltage protection (including load dump), and negative-voltage output clamping for inductive loads. A high-side switch is a power-distribution IC that controls a load by switching the positive supply rail rather than ground return; this topology, also called a smart power switch or PROFET, sits in the PMIC (Power Management IC) hierarchy between discrete MOSFETs and fully-integrated system-basis chips. Compared with an electromechanical relay, a high-side switch provides silent, bounce-free switching, integrated diagnostics, and far faster fault response; compared with a discrete MOSFET plus fuse, it self-protects without external components. The ITS4140N integrates a charge pump that drives the internal N-channel FET, a precise current limit, thermal shutdown, and ground-loss detection. Diagnostic feedback is provided through the IN/status pin, simplifying wire harness troubleshooting. Switching inductive loads such as solenoids, relays, and small motors is handled with internal active clamping that absorbs the back-EMF without external freewheeling diodes, simplifying PCB layout. Designed for 12 V and 24 V industrial environments, the part withstands load-dump transients per ISO 7637-2 and is suitable for automotive and truck body electronics where the supply bus can swing well above nominal. Its 200 mA continuous current limit makes it ideal for driving small lamps, signal LEDs, sensors, and logic-level loads without external heatsinking. When designing with this device, observe maximum input voltage (60 V) under worst-case load-dump, derate current with ambient temperature above 25C, and place the input capacitor within 5 mm of the Vbb pin. The exposed tab is the power-dissipation path and must be soldered to a copper pour of at least 100 mm squared. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ITS4141NHUMA1 - 700mA Smart High-Side Switch | Infineon PROFET
The Infineon ITS4141NHUMA1 is a 700 mA single-channel smart high-side power switch housed in a PG-SOT223-4 (TO-261-4) surface-mount package with integrated vertical N-channel power FET, embedded protection, and diagnostic feedback. It operates from a load supply range of -10 V to 48 V (extended to 12 V to 45 V in PROFET Industrial datasheet specification) with a typical on-state resistance of 200 mΩ, and is intended for industrial automation, process control, and PLC digital output modules. What is a high-side power switch? A high-side power switch is a type of power distribution switch (sub-category: load driver) that sits between the positive supply rail and the load, controlling current flow by turning the integrated MOSFET on and off in response to a logic-level input. Within the broader taxonomy, the high-side switch belongs to: PMIC -> Power Distribution Switch -> Load Driver -> High-Side Switch. Infineon's PROFET family is the industry-leading implementation using a vertical N-channel FET for low R_DS(on) and high energy robustness. Key features include short-circuit protection with current limitation, overload protection, overvoltage protection including load-dump, undervoltage shutdown with auto-restart and hysteresis, plus an open-drain status diagnostic pin. The 200 mΩ R_DS(on) at 25 °C minimizes conduction losses, while the integrated charge pump drives the gate of the N-channel FET for true high-side switching with a standard 3.3 V or 5 V CMOS logic input. PG-SOT223-4 provides a low thermal resistance path via the central tab, enabling continuous 700 mA operation without external heatsinking. The architecture is built on Infineon's Smart Power technology - a vertical DMOS output stage with monolithic CMOS control logic. The diagnostic pin reports open-load, overtemperature, and overcurrent events back to the microcontroller, while the auto-restart behavior allows the part to recover automatically once a fault clears, reducing firmware complexity in PLC and process-control applications. Typical applications include 24 V industrial PLC digital outputs, factory-automation I/O modules, sensor and actuator power distribution, building-automation relay drivers, and battery-protected low-side-of-24V systems. The wide V_S range with load-dump tolerance makes it especially suited for 24 V truck and bus body-controller applications. When designing with this part, respect the 700 mA continuous current limit and place the tab solder pad on at least 1 cm² of copper pour to keep R_thJA low enough for the SOA. The status pin requires a pull-up resistor and is open-drain; ensure input transitions are below 5 V CMOS thresholds for noise-immune switching. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
ITS4142NHUMA1 - 1.4A Smart High-Side Switch SOT-223 | Infineon
The Infineon ITS4142NHUMA1 is a single-channel smart high-side power switch with an integrated vertical N-channel power FET, housed in a 4-pin SOT-223 (PG-SOT223-4) surface-mount package. It delivers up to 1.4 A continuous load current and replaces electromechanical relays and discrete switching circuits with a robust solid-state solution that includes embedded protection and diagnostic functions. What is a high-side power switch? A high-side power switch is a semiconductor device placed between the positive supply rail and the load. By switching on the high side, the load is referenced to ground when off, eliminating ground loops and improving safety in industrial automation. High-side switches belong to the broader category of power distribution switches within power management ICs. Compared to low-side switches or electromechanical relays, smart high-side switches provide on-resistance control, fault feedback, and protection features in a single monolithic IC. The ITS4142N integrates short-circuit protection with current limitation, overload protection, overvoltage protection including load-dump transients, undervoltage shutdown with auto-restart and hysteresis, and inductive-load switching capability. These features enable it to drive resistive, inductive, and capacitive loads in harsh 12 V and 24 V automotive and industrial environments. The logic-level input is compatible with 3.3 V and 5 V microcontrollers, simplifying digital control. Architecturally, the device uses Infineon's SIPMOS vertical power MOSFET technology, which minimizes on-state conduction losses versus lateral MOSFETs. The integrated charge pump drives the gate of the N-channel FET to provide a true low-resistance path from supply to load. An onboard thermal shutdown circuit protects the die during overload events, while open-drain diagnostic feedback signals fault conditions to the host microcontroller. Typical applications include 24 V industrial PLC outputs, automotive body-control modules, relay replacement in HVAC and lighting systems, programmable logic controller digital outputs, and solenoid or valve drivers. With its wide operating voltage range and embedded protection, the ITS4142N is well suited for IEC 61131-2 compliant industrial digital outputs. When designing with this part, ensure that input debouncing and proper TVS protection are applied to the load lines for long-term reliability, and verify junction temperature under worst-case continuous load. A key design trade-off is RDS(on) versus quiescent current; the ITS4142N favors low on-resistance for minimal load-side dissipation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting both new designs and relay-replacement retrofits.
ITS41K0SMENHUMA1 - 1Ω 60V 200mA Smart High-Side Switch | Infineon
The Infineon ITS41K0SMENHUMA1 (ITS41K0S-ME-N) is a 200 mA smart high-side N-channel power switch housed in a PG-SOT223-4 surface-mount package. It integrates a 1 Ω typical on-state MOSFET channel with full protection features for industrial load driving. The device operates from 4.9 V to 60 V supply rails and is part of the PROFET Industrial MINI-PROFET family. A high-side power switch (also called a load switch or smart switch) is a semiconductor device that controls power delivery to a downstream load by switching the positive supply rail. Compared with a discrete MOSFET plus fuse arrangement, a smart high-side switch integrates the switching transistor, gate driver, current limit, thermal protection, ESD protection, and diagnostic feedback into one IC. This integration reduces PCB area, eliminates external fuses, and provides fault reporting to the host microcontroller. The ITS41K0S family belongs to the broader Infineon PROFET (Protected MOSFET) product hierarchy used in industrial, home appliance, and building automation systems. Key features include a 60 V maximum load-dump tolerant supply rating, 800 mΩ maximum on-resistance (R_DS(on)), and 200 mA continuous load current capability. Built-in protection includes thermal shutdown with auto-restart, overcurrent protection with current limiting, overvoltage clamp (active clamp against automotive load-dump transients), ESD protection on the IN/DEN pins, and reverse-battery robustness with ground-loss tolerance. The PG-SOT223-4 package provides a thermal pad for PCB heat spreading and supports up to approximately 1 W dissipation with proper layout. Technically, the ITS41K0SMENHUMA1 uses an N-channel vertical power MOSFET with a charge pump to drive the gate above the supply rail, allowing true low-R_DS(on) high-side switching. A status feedback pin provides diagnostic information to the microcontroller. The device is qualified for industrial environments, supporting -40°C to +125°C junction operation. Typical applications include industrial PLC digital outputs, relay and solenoid replacement, building automation controls, home appliance driver stages (washing machines, dishwashers, white goods), and small motor or valve drivers. The 60 V rating makes it well suited for 24 V industrial bus systems with significant transient margin. When designing with this part, ensure the input capacitor (typically 100 nF close to the Vbb pin) and output capacitor are sized according to the application load profile. The exposed pad must be soldered to a copper pour of at least 1 cm² to keep junction temperature within safe limits at sustained loads. The diagnostic output requires proper pull-up configuration per the datasheet. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and source the ITS41K0SMENHUMA1 with confidence.
ITS4200SMENHUMA1 - 700mA 41V Smart High-Side Switch | Infineon
The Infineon ITS4200SMENHUMA1 is a protected single-channel Smart High-Side NMOS Power Switch in a SOT-223-4 (PG-SOT223-4) package with charge pump and CMOS-compatible input, monolithically integrated in Infineon Smart technology (PROFET™ Industrial family). The device delivers up to 0.7 A continuous load current, 41 V overvoltage protection (including load-dump), and embedded thermal shutdown, short-circuit protection with current limitation, and undervoltage shutdown. The logic-level CMOS input enables direct MCU GPIO control without level shifters. A high-side power switch (also called a smart high-side driver) is a power distribution IC that sits between a positive supply rail and a load, providing controlled turn-on, protection, and diagnostic feedback. Unlike a low-side switch (which switches the load to ground), a high-side switch returns load current directly to ground when the FET is on, eliminating ground-shift noise and offering short-to-ground protection by default. The high-side switch family sits inside the broader taxonomy: power switch IC -> power management IC -> semiconductor device. Related Infineon families include PROFET™, HITFET™, and SPOC™ for various current ranges. Key features include 0.7 A nominal load current, 41 V load-dump overvoltage protection, embedded thermal shutdown with restart, short-circuit current limitation, open-load detection in OFF state, and very low quiescent current (microamp range) for always-on applications. The CMOS-compatible input pin provides a clean logic interface with pull-down current. The monolithic Smart technology integration puts the vertical power FET, charge pump, and protection logic on a single die. The ITS4200S-ME-N variant (its full part designation behind the SP-number ITS4200SMENHUMA1) is targeted at industrial-grade applications requiring robust protection. The internal charge pump drives the gate of the N-channel MOSFET above the supply rail so the device behaves as an ideal high-side switch. Diagnostic feedback via the status pin supports advanced fault handling. According to the manufacturer datasheet, the part is not qualified for automotive use per Infineon policy. Typical applications include industrial PLC digital outputs, building automation relay replacement, USB downstream power switching, sensor and actuator power distribution, and small DC load control in 12 V and 24 V industrial systems. The wide operating voltage range (5 V to 41 V) covers 12 V and 24 V nominal buses including load-dump transients. When designing with this part, ensure the load current stays below 0.7 A nominal (1 A peak) and respect the SOT-223-4 thermal resistance (around 70 C/W on a standard 2-layer 1 oz PCB) by adding a copper pour under the tab. The status pin needs a pull-up resistor if diagnostics are required; leave it floating otherwise to minimize quiescent current. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ITS4200SMEOHUMA1 - 700mA Smart High-Side Switch | Infineon
The Infineon ITS4200SMEOHUMA1 is a 700 mA smart high-side N-channel MOSFET power switch housed in a 4-pin PG-SOT223-4 (3 leads + tab) surface-mount package, monolithically integrated in Infineon's SMART technology. It delivers a typical on-state resistance of 150 mOhm, supports nominal operating voltages up to 45 V with load-dump protection, and provides an embedded CMOS-compatible input pin with internal charge pump for true logic-level gate drive. A smart high-side switch (also called a high-side driver, smart power switch, or PROFET) is a power-distribution IC that sits between an upstream supply and a downstream load, replacing a discrete MOSFET plus discrete protection circuitry. It belongs to the broader power-management category: high-side switch -> power distribution switch -> power management IC -> semiconductor. By placing the switch on the high side of the load, the device allows loads (such as lamps, solenoids, relays, or resistive heaters) to share a common ground return, simplifying PCB routing and improving system safety because fault currents flow back through the chassis ground. Key features include fixed current limiting, overtemperature shutdown with auto-restart, short-circuit protection with shutdown, overvoltage protection including load dump, ground-loss protection, and ESD protection on the input pin and the load output. The CMOS-compatible input is current-controlled, allowing direct drive from a microcontroller GPIO without level shifting. Reverse-battery protection is achieved through the body diode of the internal power MOSFET in conjunction with an external resistor. The architecture combines a vertical power DMOS output stage, a charge pump to generate the gate-drive voltage above the supply rail, and analog protection blocks for current sense, thermal sense, and voltage monitoring. This monolithic integration is what differentiates ITS-class parts from discrete FET-plus-driver solutions: it eliminates layout-induced parasitic inductance issues and provides guaranteed, tested protection thresholds rather than discrete-component tolerances. Typical applications include PLC digital outputs, sensor and actuator power distribution in industrial automation, body-control modules in automotive systems, LED driver switching, relay and solenoid drivers, and general 24 V industrial bus switching. Its 700 mA continuous current limit and 45 V transient rating make it especially suited to 24 V PLC and truck/bus 24 V systems where load-dump transients up to 45 V must be tolerated without damage. When designing with this device, place a reverse-polarity protection diode or P-MOSFET at the supply input to handle full-load reverse-battery events, and ensure adequate copper area on the tab (pin 4) for thermal dissipation. The current-controlled input means a single series resistor sets both the input current and the logic threshold; do not drive the input with a hard voltage source without this resistor. This page synthesizes distributor pricing, drop-in alternatives from authorized sources, and practical design notes not found in the manufacturer datasheet alone.
ITS4200SMEPHUMA1 - 1.4A Smart High-Side Switch | Infineon
The Infineon ITS4200SMEPHUMA1 is a protected single-channel Smart High-Side N-Channel MOSFET power switch with 1.4 A continuous load current, 150 milliohm typical on-state resistance (Rdson), and integrated vertical power FET monolithically fabricated in Infineon's Smart technology, housed in a 4-pin PG-SOT223-4 surface-mount package. The device operates across an extended -3 V to 45 V supply range and combines a charge pump with a CMOS-compatible logic input, enabling direct 3.3 V/5 V microcontroller GPIO drive without level shifting. A high-side power switch (also called a load switch, smart switch, or solid-state eFuse) is a power distribution switch placed between the supply rail and the load. Compared with discrete fuses, MOSFETs, and electromechanical relays, smart high-side switches integrate the power FET, gate driver, current sense, and protection state machine on a single die. The ITS4200S-ME-P belongs to the MINI-PROFET family from Infineon, optimized for high-current drive capability in the compact SOT-223-4 footprint. Within the broader taxonomy, this part is a power management IC (PMIC) sub-class: power distribution switch -> high-side switch -> smart high-side switch -> PROFET -> MINI-PROFET. Key features include current-controlled input, current limitation, short-circuit protection, undervoltage shutdown, overvoltage protection with load-dump resilience up to 45 V, thermal shutdown with auto-restart, and the ability to switch inductive loads. The CMOS-compatible logic input and the integrated charge pump simplify interface design and eliminate external bootstrap components, reducing BOM cost in 12 V/24 V systems. Architecturally, the ITS4200SMEPHUMA1 integrates a vertical N-channel DMOS output stage, on-chip charge pump for gate drive generation, current sense amplifier, and a fault state machine that handles short-circuit, overvoltage, undervoltage, and thermal events. This monolithic integration delivers a robust solid-state alternative to electromechanical relays, supporting harsh automotive electrical environments including cranking transients and load-dump surges on 12 V buses. Typical applications include automotive body electronics (interior lighting, seat control, mirror heating, HVAC actuators), industrial PLC outputs and solenoid drivers, and any 12 V/24 V bus requiring protected high-side switching. The AEC-Q100 qualification makes the part suitable for under-hood and passenger-compartment automotive modules where reliability under thermal cycling and electrical transients is mandatory. When designing with this device, ensure adequate PCB copper area on the tab/heatsink pad to dissipate I²R losses. The ITS4200SMEPHUMA1 includes built-in protection, but designers should still validate fault-recovery behavior with their specific load profile and verify inrush behavior at cold temperature extremes. This page synthesizes distributor pricing, drop-in MINI-PROFET alternatives, and practical design notes not found on the manufacturer datasheet alone.
ITS4200SSJDXUMA1 - 1.2A Smart High-Side Switch | Infineon PROFET
The Infineon ITS4200SSJDXUMA1 is a 200 mOhm single-channel smart high-side power switch built on Infineon's PROFET (Protected MOSFET) platform, housed in a PG-DSO-8 package. It delivers 1.2 A continuous load current with 6 V to 52 V operating supply range, integrating a vertical N-channel power MOSFET with comprehensive embedded protection and diagnostic functions for industrial and automotive 24 V loads. A smart high-side switch is a power distribution switch that sits between the supply rail and the load, providing controlled turn-on/turn-off, current limiting, and fault feedback. Within the broader taxonomy, this part belongs to the PROFET family -> intelligent power switch (IPS) -> high-side driver -> load driver -> power management IC. Compared to a discrete MOSFET plus fuse, the ITS4200SSJDXUMA1 eliminates external protection components, simplifies PCB layout, and provides real-time status feedback to the microcontroller. Key specifications include 200 mOhm typical on-state resistance (R_DS(on)), 1.2 A continuous drain current, 6 V to 52 V supply range, and 0.8 mA quiescent supply current. The device features overload protection, current limitation, short-circuit protection with thermal shutdown and auto-restart, overvoltage protection including load-dump transient tolerance, undervoltage shutdown, and fast demagnetization of inductive loads. A diagnostic status output flags open-load and overtemperature conditions back to the host MCU. The ITS4200SSJDXUMA1 uses Infineon's vertical DMOS process for low R_DS(on) per area and integrates charge pump, gate driver, sense-FET, and protection logic on a single die. The 8-pin DSO footprint exposes IN, OUT, GND, Vbb, and a single status pin, simplifying PCB routing versus multi-channel PROFET alternatives. Maximum power dissipation is 1400 mW. Typical applications include 24 V industrial relay and solenoid drivers, PLC digital outputs, automotive body electronics (lighting, door modules, seat controllers), and resistive/inductive load management. The 52 V load-dump tolerance makes it directly compatible with 12 V and 24 V automotive buses. When designing with the ITS4200SSJDXUMA1, place a 100 nF ceramic bypass capacitor close to Vbb and verify heatsinking for continuous 1.2 A loads above 25 C ambient. Use the status pin to flag fault conditions to the host MCU rather than relying on software polling of the output voltage. This page synthesizes Infineon distributor pricing, PROFET family drop-in alternatives (ITS4100SSJNXUMA1, BTS462TATMA1), and practical design guidance for 24 V load switching that the manufacturer datasheet alone does not consolidate.