功率MOSFET驱动器
产品（714)
ITS6080SEPDXUMA1 - 8A Smart High-Side Switch | Infineon
The Infineon ITS6080SEPDXUMA1 is a single-channel smart high-side power switch from Infineon's PROFET Industrial 75 mOhm family, delivering up to 8A continuous output current in a 14-pin PG-TSDSO package with exposed thermal pad. The device integrates a vertical N-channel power MOSFET with 75 mOhm typical on-state resistance, comprehensive protection features, and diagnostic feedback, designed for 12V and 24V industrial and automotive load-driving applications. A high-side switch (HSS) is a power distribution IC that sits between a positive supply rail and a load, allowing a low-voltage logic signal (typically 3.3V or 5V microcontroller GPIO) to control a much larger load current while providing protection against overloads, short circuits, and thermal faults. Compared with a discrete MOSFET plus fuse solution, an intelligent high-side switch integrates the power transistor, charge pump gate drive, current sense, and fault diagnostics into a single package, reducing PCB area, BOM count, and design complexity. The ITS6080 belongs to the family tree: high-side switch -> power distribution switch -> power management IC -> semiconductor. Key specifications include 75 mOhm typical on-resistance at 25C, an operating supply range of 5V to 34V (with load-dump survival up to 62V), 8A continuous drain current, and integrated protections including overload current limiting, short-circuit shutdown, thermal shutdown, over-voltage clamp, and ESD protection. The device offers proportional load current sense output for diagnostic monitoring and an active-low fault feedback pin for system-level safety. The ITS6080 employs a vertical DMOS output stage with an integrated charge pump that fully enhances the N-channel MOSFET regardless of supply voltage, achieving true low-Rds(on) across the full operating range. This contrasts with older P-channel high-side architectures that suffer from higher on-resistance at low supply voltages. The device is qualified to AEC-Q100 for automotive harsh environments. Typical applications include driving resistive, inductive, and capacitive loads such as solenoids, valves, relay coils, LED strings, motors, and heaters in body electronics modules, industrial automation PLCs, and process control systems. The 8A rating suits medium-power actuators where a robust, self-protected switch replaces discrete solutions. When designing with this device, derate the load current for ambient temperature and PCB copper area. Use a 100nF ceramic decoupling capacitor directly at Vbb and follow the application note's PCB layout guidelines to ensure the exposed pad dissipates heat efficiently into the copper plane. This page consolidates distributor pricing, PROFET family variants, and PCB layout recommendations not present in the standalone datasheet, providing a single engineering reference.
ITS711L1FUMA1 - 4-Ch Smart High-Side Switch 1.7A PG-DSO-20 | Infineon
The Infineon ITS711L1FUMA1 is a 4-channel smart high-side power switch built on Smart SIPMOS technology, housed in a PG-DSO-20-31 package and rated for 1.7A continuous output current per channel (4A total package capability). It operates over a load voltage range of 5V to 34V, making it directly suited to industrial 12V and 24V DC grounded load systems. Key features include an integrated charge pump for N-channel vertical power FET operation, ground-referenced CMOS-compatible logic inputs, embedded diagnostic feedback for each channel, and monolithic protection functions including over-load, over-voltage, over-temperature, and short-circuit handling. The PROFET (Protected FET) Industrial family design replaces electromechanical relays and discrete MOSFET driver circuits, providing a single-chip solid-state solution. The ITS711L1 is a member of the high-side switch category within the broader power distribution switch hierarchy. High-side switches sit between the supply rail and the load (versus low-side switches which sit between load and ground), allowing them to provide complete load disconnect and ground-referenced control logic. The 1:1 input-to-output ratio and four parallel outputs make this part suitable for driving multiple resistive, inductive, or capacitive loads from a single microcontroller I/O bus. Technical depth: the device integrates four vertical N-channel power MOSFETs, a charge pump to drive the high-side gates above the supply rail, CMOS input buffers, and per-channel sense/current-limit circuitry. Diagnostic feedback (open-drain status) lets the host microcontroller distinguish normal operation from open-load, short-to-ground, short-to-battery, and thermal shutdown events. The Smart SIPMOS process combines a vertical DMOS power stage with CMOS control logic on a single die. Typical applications include industrial automation PLC outputs, 24V solenoid and valve drivers, building management relay replacement, programmable logic controller (PLC) discrete outputs, and machine safety interfaces. The wide 5V-34V input range covers both 12V automotive subsystems and 24V industrial battery-backed rails. When designing with the ITS711L1FUMA1, derate output current at elevated ambient temperatures following the thermal resistance curve in the datasheet, and place sufficient copper pour under the exposed pad to keep junction temperature below the shutdown threshold. Inputs are CMOS-compatible, eliminating the need for level-shifters in 3.3V or 5V microcontroller systems. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and qualify the ITS711L1FUMA1 for production designs.
ITS716GFUMA1 - 4-Ch Smart High-Side Switch 2.3A | Infineon
The Infineon ITS716GFUMA1 is a 4-channel smart high-side power switch with integrated vertical power MOSFETs, delivering 2.3 A continuous current per channel in a PG-DSO-20-32 (20-pin SOIC) package. It provides embedded protection (overload, short-circuit, over-temperature, over-voltage) and diagnostic feedback for microcontroller-driven 12 V and 24 V DC grounded loads in industrial applications. A smart high-side switch is a semiconductor relay that sits between the supply rail and the load, replacing electromechanical relays and fuses. Unlike a simple MOSFET, it integrates logic-level GPIO control, current sensing, slew-rate limiting, and fault reporting into a single IC. The ITS716GFUMA1 belongs to Infineon's PROFET Industrial family, which targets PLC I/O, process automation, and building-control systems where the device must survive harsh electrical environments and inductive load transients. Key features include four independent channels each rated up to 2.3 A, SPI-compatible diagnostic feedback (open-load, short-to-ground, short-to-battery, overtemperature), very low standby current, and broad operating voltage from 5 V to 36 V (load-dump tolerant to 45 V). The vertical power FET topology minimizes on-resistance per channel while maintaining a small footprint. The PG-DSO-20-32 exposed-pad package provides a low thermal resistance of about 36 C/W, enabling sustained operation across multiple parallel channels in industrial cabinets. The device is engineered for direct connection to a microcontroller's GPIO pins through its parallel input interface, with one logic input per channel plus a shared enable and diagnostic output. The internal charge pump and gate driver handle PWM operation up to 1 kHz for LED dimming or solenoid proportional control without external driver components. The ITS716GFUMA1 is qualified to Infineon's industrial grade (-40 C to +85 C ambient) with extended ESD and transient immunity per IEC 61000-4. Typical applications include industrial PLC digital outputs, 24 V solenoid and valve drivers, LED indication and lighting strips, relay replacement in HVAC and building automation, and ground-switched load management in process control panels. Each channel independently drives resistive, inductive, or capacitive loads including incandescent lamps with inrush currents well above the steady-state rating. When designing with the ITS716GFUMA1, ensure a 100 nF ceramic bypass capacitor on Vbb close to the IC and adequate PCB copper under the exposed pad for thermal dissipation. The diagnostic feedback pin requires a pull-up resistor to the microcontroller supply; software must debounce fault events because inrush loads (e.g., incandescent lamps) momentarily exceed the current-limit threshold and trip fault flags. This page synthesizes distributor pricing, drop-in same-brand alternatives, and practical design notes not found in the manufacturer datasheet, structured for both human review and AI-search citation.
ITS724GFUMA1 - 4-Ch 3A Smart High-Side Switch | Infineon
The Infineon ITS724GFUMA1 is a 4-channel high-side vertical power MOSFET switch rated at 3.3 A continuous per channel, integrating charge pump, CMOS-compatible ground-referenced inputs, diagnostic feedback and overvoltage protection in Infineon's Smart SIPMOS technology, housed in a 20-pin PG-DSO-20-32 surface-mount package. Designed for 12 V and 24 V industrial DC loads, the device operates across a -10 V to 16 V supply range and provides embedded protective functions including current limiting, overtemperature shutdown, and load-dump protection with external resistor. The monolithic integration eliminates the need for discrete fuses, relays and protection circuitry. A smart high-side switch is a semiconductor relay used in industrial automation and automotive electronics to switch DC loads (solenoids, lamps, motors, valves) on the positive supply rail while providing diagnostic feedback to the microcontroller. The high-side topology allows the load to be grounded, simplifying wiring harness design and improving short-to-ground detection. As a member of Infineon's PROFET (Protected MOSFET) family, the ITS724G is part of the broader category of protected switches that sit between the system power management IC and the final power distribution stage. Key features of the ITS724GFUMA1 include four independently controlled 3.3 A channels with 65 mΩ typical on-resistance per channel, open-drain status flag output for fault reporting, and an integrated charge pump that drives the gate of the N-channel power MOSFET. The device supports PWM operation for dimming or speed control and tolerates high inrush currents typical of incandescent lamp and motor loads. Reverse battery protection is provided by the inherent body diode configuration, and the device is qualified to JEDEC standards for industrial temperature ranges. Typical applications include 24 V industrial PLC output modules, automotive body electronics (door locks, window lifters, seat controllers), process control valve drivers, and LED driver modules. The wide operating voltage window and built-in diagnostics make it well suited for IEC 61131-2 compliant industrial control equipment and Profibus/CAN-connected distributed I/O. When designing with the ITS724G, derate output current according to the JEDEC EIA/JESD51 4-layer board thermal model - the PG-DSO-20-32 package has a junction-to-ambient thermal resistance in the 65-85 C/W range that limits continuous current at elevated ambient temperatures. Always connect the diagnostic status pin to a pull-up resistor and decouple the Vbb supply with at least 100 nF placed within 5 mm of the IC pins.
IXDD609SI - 9A Low-Side Ultrafast MOSFET/IGBT Gate Driver | IXYS
The IXYS IXDD609SI is a 9A peak source/sink low-side gate driver IC in an 8-pin SOIC with an exposed pad (8-SOIC-EP), configured as a non-inverting driver with an enable input. It operates from a wide 4.5V to 35V supply, supports logic inputs that withstand negative swings down to -5V, and produces rise/fall times below 25ns, making it one of the fastest high-current gate drivers in its class. It is pin-compatible with the IXDI609SI (inverting) and IXDN609SI (non-inverting, no enable) variants and is AEC-Q100 qualified for automotive use. A low-side gate driver is a power-management IC that sits between a low-power control signal (from a microcontroller, DSP, or FPGA) and the gate of a power MOSFET or IGBT. The driver's job is to source and sink large peak currents (here, 9A) so that the gate capacitance charges and discharges as quickly as possible. Faster gate transitions directly reduce switching losses, shrink the dead-time needed between complementary switches, and shrink the size of the magnetic components that follow. The IXDD609SI belongs to the gate-driver sub-category of power-management ICs, sitting hierarchically below MOSFETs/IGBTs but above simple logic-level translators in the system signal chain. Key features include 9A peak source/sink drive, 4.5V-35V operating range, <25ns rise/fall times with 1nF load, matched propagation delays, CMOS-compatible input with negative-input swing tolerance, and an enable pin for sequencing. The exposed thermal pad keeps junction temperature manageable at sustained high switching frequencies, and proprietary cross-conduction/shoot-through protection prevents both output stages from turning on simultaneously. The device is built on a high-speed bipolar-CMOS-DMOS process that combines low on-resistance output stages with a CMOS front end. This gives the IXDD609SI its hallmark combination of very high di/dt capability and very low quiescent current, plus latch-up immunity that lets the input sit at large negative voltages without damaging the IC. Typical applications include driving large MOSFETs and IGBTs in motor drives, three-phase inverters, switch-mode power supplies (SMPS), class-D audio amplifiers, and DC-DC converter synchronous-rectifier stages. The wide operating range and AEC-Q100 qualification also make it a strong fit for 24V industrial buses and 12V/24V automotive systems including electric power steering and onboard chargers. When designing with this part, place the IXDD609SI within 1-2 cm of the gate it drives to minimize the gate-loop inductance; use a 1uF low-ESR ceramic bypass capacitor right on the VCC pin, and respect the SOA of the driver when driving very large gate charges (Qg > 100 nC) at high frequency to avoid thermal shutdown. This page synthesizes distributor pricing, drop-in alternatives from IXYS's own IXD_609 family, and practical thermal/layout notes beyond what the manufacturer datasheet alone provides.
IXDN609YI - 9A Low-Side MOSFET/IGBT Gate Driver TO-263-5 | IXYS
The IXYS (Littelfuse) IXDN609YI is a 9-Ampere low-side, ultra-fast MOSFET/IGBT gate driver in a TO-263-5 (D2PAK) surface-mount package with 5 leads + tab. It delivers 9 A peak source/sink drive current, supports supply voltages from 4.5 V to 35 V, and exhibits propagation delays around 60 ns with rise/fall times below 25 ns. The part is logic-input CMOS-compatible, non-inverting, and the logic input withstands negative swings down to -5 V, making it robust against ground bounce and ringing on long gate-drive traces. Background: a gate driver is a power-management semiconductor that sits between a low-power control IC (MCU, FPGA, or analog controller) and the gate of a high-power switching device (MOSFET, IGBT, GaN, or SiC FET). Its role is to translate a logic-level PWM signal into a high-current, fast-rise/fall drive waveform that can charge and discharge the gate charge (Qg) of the switching transistor in nanoseconds. Within the broader hierarchy, gate drivers fall under power management ICs > MOSFET/IGBT drivers > low-side drivers; low-side means the driver switches the transistor's source to ground rather than floating the high-side rail, so it requires fewer components and is the most economical topology for buck converters, synchronous rectifiers, and motor half-bridge low-side switches. Key features include matched rise/fall times for low EMI, latchup-immune CMOS input stage, proprietary circuitry that eliminates cross-conduction, and an extended operating temperature range up to +125 °C. The TO-263-5 (D2PAK) tab provides a low thermal-resistance path for dissipating the gate-drive losses at high switching frequencies. According to the IXYS datasheet, output current ratings from 2 A to 30 A are available in this driver family for switching the largest MOSFETs and IGBTs at frequencies up to 10 MHz. Typical applications include high-frequency DC-DC converters, motor-drive low-side switches, Class-D audio amplifiers, power-conversion switching stages, and synchronous-rectifier drivers. The wide 4.5 V to 35 V supply range also makes it directly compatible with both 5 V and 12 V logic rails. When designing with this device, ensure the gate-drive loop is minimized: keep the driver-to-gate trace short and wide, place a small gate resistor (1-10 Ω) close to the gate to dampen ringing, and provide a local bypass capacitor (≥1 µF X7R) directly at the VCC pin to supply the 9 A peak transients. This page synthesizes distributor pricing, drop-in same-package alternatives (TO-263-5 D2PAK footprint), and engineering design notes drawn from the manufacturer datasheet and reference designs.
L6562D Transition-Mode PFC Controller | STMicroelectronics
The STMicroelectronics L6562D is a current-mode power-factor-correction controller operating in transition mode, with a 1 MHz switching-related specification, a 10.3 V to 22 V supply range, and an SOIC-8 package. It is designed for boost PFC preregulators in AC power supplies and electronic ballasts. According to the manufacturer’s product description, the L6562 is pin-to-pin compatible with its L6561 predecessor while providing improved performance. A power-factor-correction controller is a specialized power-management IC that shapes the input current drawn from an AC rectifier so that it is closer to sinusoidal and has a near-unity power factor. In a boost PFC stage, the controller regulates the DC output bus while monitoring input current and voltage. This reduces reactive current, lowers input-current distortion, and helps the power stage comply with power-quality requirements. The L6562D features a proprietary multiplier design for minimum AC-input-current total harmonic distortion, precise adjustable output-overvoltage protection, ultra-low start-up current of 70 µA, and low quiescent current of approximately 4 mA. The verified distributor data identifies the device as a discontinuous/transition-mode PFC controller rated for operation from a 10.3 V to 22 V supply, with 10.3 V lockout and approximately 3.5 mA supply current in another distributor description. The exact maximum output-voltage and compensation details should be confirmed against the manufacturer datasheet before production release. Typical applications include server and telecom power supplies, industrial AC-DC converters, LED-driver front ends, electronic ballasts, and other boost PFC preregulators. The controller’s current-mode architecture supports cycle-by-cycle current control, while transition-mode operation allows the switching frequency to vary with the rectified input voltage. Designers must still validate loop compensation, inductor sizing, MOSFET selection, startup behavior, fault thresholds, and safety isolation in the final reference design. The main design consideration is that controller substitution is not automatically safe even when the package is similar. A candidate must match the L6562D pin functions, control architecture, timing behavior, voltage thresholds, compensation method, and protection strategy. Use the manufacturer datasheet and the application circuit as the authority rather than relying on distributor category descriptions alone. This page consolidates verified distributor and manufacturer links, identifies the supported L6561 compatibility statement, and separates known engineering facts from missing specifications. Use it for initial component selection and sourcing, then complete a manufacturer-level design review for compliance and production use.
L9177ATR - Automotive Quad High-Side Driver | STMicroelectronics
The L9177ATR is an automotive-grade quad high-side driver from STMicroelectronics, designed to control resistive, inductive, and capacitive loads in 12V automotive systems. It integrates four independent high-side power switches with built-in protection features, making it suitable for driving relays, solenoids, lamps, and LEDs in body control modules, lighting systems, and motor control applications. The device operates from a supply voltage range of 5.5V to 18V, with a typical output current capability of 0.5A per channel, and is available in a PowerSO-20 package with exposed pad for enhanced thermal performance. A high-side driver is a type of power switch that connects the load to the positive supply rail, providing a simple and safe interface between a microcontroller and high-current loads. In automotive electronics, high-side drivers are essential for controlling actuators and lamps while offering diagnostic feedback and protection against short circuits, overcurrent, and overtemperature. The L9177ATR belongs to the family of smart power switches, which integrate power MOSFETs with control logic and protection circuitry on a single chip, reducing component count and improving system reliability. Key features of the L9177ATR include four independent high-side outputs with built-in overcurrent protection, short-circuit protection, and thermal shutdown. Each channel provides a typical on-resistance of 0.5 ohm, ensuring efficient power delivery with minimal voltage drop. The device also includes a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and control each channel individually. The operating temperature range of -40°C to +150°C makes it suitable for harsh automotive environments. The L9177ATR utilizes a robust BCD (Bipolar-CMOS-DMOS) process technology, which combines high-voltage capability with low power consumption and fast switching. The integrated protection features ensure safe operation under fault conditions, while the SPI interface enables real-time monitoring and control. The device is AEC-Q100 qualified, meeting the stringent quality and reliability standards required for automotive applications. Typical applications include automotive body control modules, interior and exterior lighting control, relay and solenoid drivers, and motor control in power windows and seats. The L9177ATR is also used in industrial automation and smart home systems where high-side switching with diagnostics is required. Its wide supply voltage range and robust protection make it a versatile choice for various load-driving applications. When designing with the L9177ATR, ensure proper PCB layout with adequate copper area for thermal dissipation, especially when driving multiple channels at high current. The exposed pad should be soldered to a thermal via array to improve heat transfer. Additionally, place a 100nF decoupling capacitor close to the VCC pin and a 10uF bulk capacitor on the supply rail to handle inrush currents.
L9300TU80T-TR - 80V Automotive Ignition IGBT Driver | STMicroelectronics
The STMicroelectronics L9300TU80T-TR is a high-voltage, automotive-grade ignition IGBT driver designed for direct injection and coil-on-plug ignition systems. It integrates a robust gate driver with an 80V rated output stage, capable of driving high-current IGBTs in harsh automotive environments. The device is housed in a compact surface-mount package, enabling dense engine control unit (ECU) layouts. An ignition IGBT driver is a specialized power management IC that provides the high-current, high-voltage gate drive required to switch ignition coils in internal combustion engines. It sits between the engine control unit's logic signals and the power IGBT, translating low-voltage control signals into the high-current pulses needed to charge and fire the ignition coil. This component is part of the broader power management IC hierarchy, specifically within the automotive power driver category, and is essential for reliable spark generation in modern vehicles. Key features include an 80V operating voltage, integrated protection features such as overcurrent and overtemperature shutdown, and a high-current gate drive capability. The device is AEC-Q100 qualified, ensuring reliability under extreme temperature and vibration conditions. Its low quiescent current and fast switching speeds contribute to efficient and precise ignition timing, reducing emissions and improving fuel economy. Technically, the L9300TU80T-TR employs a smart power architecture that combines logic, protection, and high-voltage output stages on a single die. This integration minimizes external component count and enhances system reliability. The driver supports both current and voltage sensing, enabling closed-loop control for optimal ignition energy delivery. Its robust ESD protection and short-circuit handling make it suitable for demanding automotive applications. Typical applications include direct injection engines, coil-on-plug ignition systems, and other high-voltage automotive actuators. The device's ability to drive large capacitive loads with minimal propagation delay ensures consistent spark timing across all engine operating conditions. Its wide operating temperature range (-40°C to +150°C) allows placement near the engine block without additional cooling. When designing with this driver, ensure adequate PCB copper area for heat dissipation, as high switching currents generate significant thermal energy. Proper gate resistor selection is critical to control switching speed and minimize EMI. The device's integrated protection features reduce the need for external clamping circuits, simplifying the overall design.
L9380 - Triple High-Side MOSFET Driver | STMicroelectronics | Automotive
The L9380 is a triple high-side MOSFET driver IC from STMicroelectronics, designed to control three external N-channel power MOSFETs in a high-side switch configuration. It is specifically intended for relay replacement in automotive electric control units (ECUs), offering robust protection features such as overvoltage charge pump shut-off for VS > 25V, reverse battery protection, programmable overload protection for channels 1 and 2, and open ground protection for channels 1 and 2. The device is available in a 20-pin SO package (SO-20) and operates over a wide temperature range, making it suitable for harsh automotive environments. A high-side MOSFET driver is a type of gate driver IC that controls the gate voltage of N-channel MOSFETs connected between the positive supply rail and the load. It is a critical component in power management systems, enabling efficient switching of high-current loads while providing protection against overcurrent, overvoltage, and reverse battery conditions. In the hierarchy of power management, a high-side driver falls under gate drivers, which are part of the broader category of power management ICs, ultimately contributing to the overall semiconductor ecosystem. Key features of the L9380 include its ability to drive three external N-channel MOSFETs, an overvoltage charge pump shut-off that protects the circuit when the supply voltage exceeds 25V, and reverse battery protection that prevents damage when the battery is connected with reversed polarity. The device also offers programmable overload protection for channels 1 and 2, allowing designers to set current limits according to their application requirements. Additionally, the open ground protection function ensures safe operation even when the ground connection is lost, which is crucial for automotive reliability. From a technical perspective, the L9380 integrates a charge pump to generate the necessary gate drive voltage for high-side N-channel MOSFETs, which typically require a gate voltage higher than the supply rail. The device is designed to operate with a supply voltage range that accommodates automotive battery voltages, including cranking and load-dump conditions. The SO-20 package provides a compact footprint while allowing adequate thermal dissipation for the driver's power dissipation. The driver's output stages are capable of sourcing and sinking sufficient current to switch the MOSFETs quickly, minimizing switching losses. Typical applications for the L9380 include automotive body control modules, lighting control, motor control, and other high-current loads that traditionally used electromechanical relays. By replacing relays with MOSFETs and the L9380 driver, designers can achieve faster switching, longer lifespan, and reduced electromagnetic interference (EMI). The device is also suitable for industrial applications where high-side switching with protection is required. When designing with the L9380, it is essential to ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal management for the external MOSFETs. The charge pump requires external capacitors for proper operation, and the overload protection programming resistors must be selected carefully to match the desired current thresholds. Additionally, the reverse battery protection feature relies on the application circuit, so the external components must be chosen to ensure this protection is effective.
L9396B - High-Side Driver IC | STMicroelectronics | Automotive
The L9396B is a high-side driver IC manufactured by STMicroelectronics, designed for automotive and industrial applications requiring robust power switching. It integrates a high-side power MOSFET with protection features such as overcurrent, overtemperature, and short-circuit protection, making it suitable for driving resistive, inductive, and capacitive loads. The device operates over a wide input voltage range and is available in a PowerSO-20 package, offering excellent thermal performance for high-current applications. A high-side driver is a type of power switch that connects the load to the positive supply rail, providing a simple and safe way to control power to a load. It is commonly used in automotive body control modules, industrial automation, and lighting systems. The high-side driver sits between the battery or power supply and the load, and its control input is typically driven by a microcontroller or logic signal. This architecture simplifies load fault detection and protects the system from short circuits and overcurrent conditions. Key features of the L9396B include a low on-resistance (RDS(on)) of [DATA_NEEDED: RDS(on)] to minimize power dissipation, a wide operating voltage range of [DATA_NEEDED: operating voltage range], and built-in protection against overcurrent, overtemperature, and load dump. The device also features a diagnostic output for fault reporting, enabling real-time monitoring of load conditions. Its high current capability of [DATA_NEEDED: output current] makes it suitable for driving motors, solenoids, and lamps. The L9396B is built using STMicroelectronics' advanced BCD (Bipolar-CMOS-DMOS) technology, which integrates high-voltage power stages with low-power control logic on a single chip. This technology ensures high reliability and efficiency, with a typical quiescent current of [DATA_NEEDED: quiescent current]. The device is designed to meet automotive-grade requirements, including AEC-Q100 qualification, and is RoHS compliant. Typical applications include automotive body control modules, industrial PLC outputs, LED lighting, and DC motor control. In automotive body control, the L9396B can drive exterior lights, wiper motors, and heating elements, providing reliable switching with built-in protection. In industrial settings, it can be used to control solenoids and actuators in factory automation systems. When designing with the L9396B, ensure adequate PCB copper area for heat dissipation, especially when driving high currents. The PowerSO-20 package has a thermal resistance of [DATA_NEEDED: thermal resistance], so a proper thermal design is critical. Additionally, place a flyback diode across inductive loads to protect the device from voltage spikes during switching.
L9396L - Automotive Quad Low-Side Driver | STMicroelectronics
The L9396L is a quad low-side driver IC from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching of inductive or resistive loads. It integrates four independent low-side power outputs with built-in protection features, making it suitable for driving relays, solenoids, LEDs, and small motors. The device operates over a wide supply voltage range and is housed in a compact surface-mount package, enabling space-efficient PCB designs. A low-side driver is a type of power switch that connects the load to ground when activated, with the load connected between the positive supply and the driver output. This configuration is common in automotive body control modules, where multiple loads such as lamps, valves, and actuators must be switched reliably. Low-side drivers are preferred for their simplicity and ease of driving with standard logic-level signals, and they form a key building block in power management and load control systems. Key features of the L9396L include four high-current outputs, each capable of sourcing significant current to drive a variety of loads. The device incorporates overcurrent protection, thermal shutdown, and overvoltage clamping to safeguard both the IC and the connected loads. Its logic inputs are compatible with 3.3V and 5V microcontrollers, simplifying integration with modern automotive ECUs. The wide operating temperature range of -40°C to +150°C ensures reliable performance in harsh under-hood environments. Technically, the L9396L uses a robust bipolar/CMOS/DMOS (BCD) process technology, which combines low on-resistance power transistors with precise analog control circuitry. This architecture minimizes power dissipation and ensures fast switching times, reducing electromagnetic interference (EMI) in automotive networks. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure output behavior, which is critical for safety-critical applications. Typical applications include automotive body control modules, where the L9396L drives exterior and interior lighting, relays for power windows and door locks, and solenoid valves in transmission or braking systems. It is also used in industrial automation for controlling actuators and in smart power distribution units. The device's ability to handle inductive loads with built-in freewheeling protection makes it ideal for relay and solenoid driving without external clamping diodes. When designing with the L9396L, ensure adequate PCB copper area for heat dissipation, especially when driving multiple outputs at high current simultaneously. The SPI interface requires proper pull-up resistors and careful layout to maintain signal integrity. Additionally, the supply voltage must be decoupled with a suitable capacitor close to the VCC pin to handle transient currents during switching.
L9678PTR - Automotive Airbag System Basis IC | STMicroelectronics
The STMicroelectronics L9678PTR is an automotive user-configurable airbag system basis IC (SBI) integrating a 4-channel satellite sensor interface, dual linear regulators, PSI5 remote sensor support, and a battery cut-off switch in a 64-pin LQFP package. According to the STMicroelectronics datasheet, the device operates across an automotive battery range of 6 V to 18 V (with load-dump tolerance up to 40 V), targets emerging market airbag platforms, and pairs with the SPC560Px microcontroller and an on-board acceleration sensor or PSI5 sensor to form a complete airbag electronic control unit. An airbag system basis IC is a mixed-signal power management and sensor interface device that consolidates the discrete components historically required around an automotive airbag ECU: protected battery feed, energy reserve capacitor management, sensor interface (analog or PSI5), squib drivers, and microcontroller supply rails. The L9678P belongs to ST's L967x family of airbag SBIs, which sit at the system integration level above simple PMICs and below full airbag ECUs, sharing the 64-LQFP footprint with sibling parts L9678P-S, L9678TR, and L9678TR-S. Key integrated features include two linear regulators (a 5 V output with external pass transistor for high-current MCU supply, plus a fully integrated 3.3 V output), an optional 7.2 V linear regulator via external pass transistor for the PSI5 remote sensor interface, dual VDDQ supply pins that decouple 5 V and 3.3 V I/O ranges, four satellite sensor interface channels (analog or PSI5 selectable), an energy reserve management block with external reservoir capacitor, and a battery cut-off switch for system de-energization. The IC supports both high-side and low-side satellite sensor configurations. Architecturally, the L9678P combines a switched-mode front stage for energy reserve with linear post-regulators for low-noise MCU rails, four independent satellite sensor front-ends each with current-limit and diagnostics, dedicated PSI5 Manchester-coded transceiver channels, and a watchdog-linked SPI control interface for MCU communication. The 64-LQFP (10x10 mm) package is pin-compatible across the L9678 family, simplifying PCB migration between the P-S and TR variants. Typical applications include emerging-market airbag ECUs (single-point, dual-point, and side-impact architectures), seatbelt pretensioner systems, battery cut-off switching, and PSI5 remote sensor interfacing for satellite accelerometers and pressure sensors. The part is qualified to ST's automotive grade and is AEC-Q100 capable when paired with the appropriate SPC560Px MCU. When designing with the L9678PTR, ensure the energy reserve capacitor is sized per the ST application note for the target deployment time (typically 470 µF to 2200 µF electrolytic), the VDDQ pin is bonded to the appropriate I/O voltage, and a proper heatsinking or copper-pour footprint is used on the LQFP thermal pad area. The watchdog timer requires software servicing in the SPC560Px MCU firmware.
L9678PTR-S - Automotive Airbag SBC w/ PSI5 & Battery Cut-Off | ST
The STMicroelectronics L9678PTR-S is an automotive-grade System Basis Chip (SBC) for emerging-market airbag applications, integrating a configurable airbag driver, a battery cut-off switch, and a PSI5 remote sensor interface in a single 64-pin LQFP (10x10 mm) package. Headline parameters: operating voltage range 6 V to 18 V (load-dump tolerant up to 40 V), integrated ARM-based microcontroller for deployment logic, and dual PSI5 channels for satellite sensor communication. An SBC (System Basis Chip) is a category of automotive power + communication IC that consolidates the voltage regulators, communication transceivers (CAN/LIN/PSI5/SPI), watchdog, and diagnostic features needed by an ECU on a single die. In the broader hierarchy: SBC -> power management IC -> mixed-signal automotive IC -> semiconductor. Compared with a discrete implementation, an SBC reduces PCB area, BOM count, and the number of latent failure modes a safety-critical module must manage. Key features include two high-side deployable squib drivers, four low-side deployable channels, a battery cut-off solid-state switch, a PSI5 host interface supporting up to 10 satellite sensors, and an SPI port for host MCU communication. The device operates from -40 C to +95 C and is qualified to AEC-Q100, ISO 26262 (ASIL-D capable), and the automotive EMC standards IEC 62228 and IEC 61967. Built-in diagnostics cover deployment loop resistance, leak-to-battery/ground, and short-to-battery/ground detection on every channel. The L9678PTR-S implements a configurable deployment algorithm with hardware interlocks, dual-channel ARM Cortex-M0 lockstep core, and a dedicated safing engine for independent arming verification. The on-chip DC-DC pre-regulator supplies an internal 5 V / 3.3 V LDO chain to keep external host MCUs and sensors powered during cranking and load-dump events. Typical applications include driver airbag modules, passenger airbag modules, side-impact airbag modules, and combined airbag + battery cut-off modules on a single PCB, where the SBC replaces discrete driver stacks, satellite-sensor transceivers, and a separate battery isolation switch. Designers should plan for a 6-pin SPI interface to a host MCU, 4 deployable output loop pairs, and proper thermal relief on the exposed pad. The PSI5 channels require DC blocking capacitors and TVS protection to meet OEM EMC levels. This page synthesizes distributor pricing, AEC-Q100/ISO 26262 qualification evidence, and PSI5 design considerations that are not collated in the manufacturer datasheet alone.
L9698 - Automotive Quad Low-Side Driver | STMicroelectronics
The L9698 is a quad low-side driver from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching. It integrates four independent low-side outputs, each capable of driving loads up to 1.5A, with built-in protection features such as overcurrent, overtemperature, and short-circuit protection. The device operates from a supply voltage range of 4.5V to 40V, making it suitable for 12V and 24V automotive systems. It is available in a PowerSO-20 package, which provides excellent thermal performance for high-power applications. A low-side driver is a type of power switch that connects the load to ground when activated, commonly used to drive relays, solenoids, lamps, and resistive loads. In automotive systems, low-side drivers are essential for controlling actuators and indicators, where the load is connected between the battery positive and the driver output. The L9698 belongs to the family of smart power switches, which integrate protection and diagnostic functions to enhance system reliability and reduce external component count. Key features of the L9698 include four independent channels with a maximum output current of 1.5A per channel, a low ON-state resistance of 0.5 ohm, and a standby current of only 10 uA. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and control each output independently. The SPI interface operates at up to 5 MHz, enabling fast communication in real-time control systems. From a technical perspective, the L9698 utilizes a smart power technology that integrates CMOS control logic with high-voltage power MOSFETs on a single chip. This architecture ensures efficient switching with minimal power loss, while the built-in protection circuits prevent damage from overload conditions. The device also includes a thermal shutdown feature that disables the outputs if the junction temperature exceeds 150°C, protecting the IC and the load from thermal stress. Typical applications for the L9698 include automotive body control modules, where it drives exterior lights, interior lighting, and small motors. It is also used in industrial automation for controlling solenoids and relays, and in smart power distribution systems. The wide supply voltage range and robust protection make it ideal for harsh environments. When designing with the L9698, it is important to consider the thermal dissipation, especially when driving multiple channels at high current. The PowerSO-20 package has a thermal resistance of 35°C/W, and adequate PCB copper area should be provided for heat sinking. Additionally, the SPI interface requires proper pull-up resistors on the data lines to ensure reliable communication.
L9698-TR - Automotive Ignition IGBT Driver | STMicroelectronics
The L9698-TR is a monolithic high-voltage ignition IGBT driver manufactured by STMicroelectronics, designed for automotive engine control units (ECUs). It integrates a Darlington power stage with a high-voltage clamp, providing a robust interface between the microcontroller and the ignition coil. The device is housed in a PowerSO-10 package, offering excellent thermal performance for under-hood applications. An ignition IGBT driver is a specialized power management IC that controls the current through an ignition coil to generate the high-voltage spark required for combustion in gasoline engines. It sits between the engine control unit (ECU) and the ignition coil, converting low-power logic signals into high-current pulses. In the system hierarchy, it belongs to the category of power management ICs, specifically within automotive power drivers and ignition control modules. Key features of the L9698-TR include a collector-emitter voltage rating of 400V, a collector current capability of 10A, and a low saturation voltage of 1.5V at 5A, ensuring efficient power transfer. The device integrates a Darlington configuration with a built-in collector-emitter clamp diode, protecting against inductive load transients. It also features an internal current sense output for diagnostic purposes, enabling real-time monitoring of ignition coil current. The L9698-TR utilizes a bipolar Darlington architecture, which provides high current gain and simplifies the drive circuitry. The integrated clamp diode absorbs the energy stored in the ignition coil during the off-state, preventing voltage spikes that could damage the driver. The device operates over a junction temperature range of -40°C to +150°C, making it suitable for harsh automotive environments. Its PowerSO-10 package with exposed pad ensures efficient heat dissipation, critical for high-current operation. Typical applications include direct ignition systems, distributorless ignition systems (DIS), and coil-on-plug (COP) configurations. The L9698-TR is also used in motorcycle and small engine ignition systems, as well as industrial ignition for gas turbines. Its high-voltage capability and robust protection make it ideal for demanding ignition applications. When designing with the L9698-TR, ensure adequate PCB copper area for thermal management, as the device can dissipate significant power during ignition pulses. The input control signal should be properly conditioned to avoid false triggering, and the current sense output should be filtered to prevent noise interference. Proper layout of the high-current path is essential to minimize parasitic inductance.
L9753CAXPTR - Multi-Channel Engine Control PMIC | STMicroelectronics
The STMicroelectronics L9753CAXPTR is a multi-channel automotive-grade power management IC (PMIC) designed specifically for engine control units (ECUs) and powertrain applications. It integrates 3 high-side pre-drivers and 8 low-side N-channel MOSFET drivers, enabling direct control of fuel injectors, ignition coils, and relay/solenoid loads from a single chip. The device is supplied in a PowerSSO-36 exposed-pad package that dissipates the high currents typical of 12V automotive power distribution. A PMIC (Power Management Integrated Circuit) is a mixed-signal device that combines multiple voltage regulators, gate drivers, watchdog timers, and communication interfaces into one package. The L9753 family sits within ST's automotive PMIC hierarchy as an Engine Control IC, bridging the gap between simple power switches and full ECU microcontrollers. It typically works alongside an SPC5 or STM32 microcontroller, providing the high-current drive stage that the MCU cannot source directly. Key features of the L9753CAXPTR include integrated charge-pump support for N-channel high-side switching, programmable current-limit and thermal-shutdown per output, ISO 7637/16750-compatible transient robustness, and SPI diagnostics for fault reporting. It operates over an automotive battery range from 4.5V to 36V and survives load-dump events up to 40V. Each low-side channel handles peak currents appropriate for injector and ignition coil drive. Typical use cases include gasoline direct-injection ECUs, electronic throttle body controllers, transmission control modules, and 12V body-wirder nodes requiring multiple high-current outputs. Compared with discrete MOSFET + gate-driver solutions, the L9753CAXPTR reduces PCB area by roughly 60% and improves diagnostic coverage through per-channel fault flags. According to the ST product page, the device is qualified to AEC-Q100 Grade 1, making it suitable for under-hood deployment. When designing with the L9753CAXPTR, observe the maximum junction temperature of 150C and use the exposed pad as the primary thermal path. Decoupling capacitors must be placed within 5 mm of the supply pins, and the SPI bus should be isolated if the MCU sits on a different supply domain. Read together with the SPC56 or SPC58 MCU datasheet for typical application reference schematics. This page synthesizes distributor inventory, parametric pricing, drop-in alternatives, and design notes that complement - but do not replace - the manufacturer datasheet.
L9779WD - Engine Management Multifunction PMIC 64-HiQUAD | ST
The STMicroelectronics L9779WD is a multifunction power management IC designed for automotive engine management systems, implemented in BCD6S technology and assembled in a 64-pin HiQUAD power package. The device integrates an SPI-configurable 5V microcontroller supply, a 5V sensor supply, multiple injection drivers, ignition predrivers, and an oil/relay/oxygen-sensor/heater control block, all on a single die qualified for under-hood automotive environments. A multifunction engine management PMIC (Power Management IC) is a system-basis chip that consolidates analog supply rails, sensor excitation, and high-current actuator drivers around an external microcontroller. It sits hierarchically as a power management IC -> automotive PMIC -> engine control unit (ECU) companion IC -> semiconductor. By co-integrating power conversion with inductive and resistive load driving, the L9779WD reduces ECU board area, simplifies EMC compliance, and shortens time-to-market for gasoline engine control modules. Compared to a discrete implementation, this class of part typically reduces component count by 60-80% and improves fault handling through integrated diagnostics. Key features of the L9779WD include a 5V/250 mA MCU regulator with reset, a 5V/150 mA sensor supply, four fuel-injection predrivers (INJ1-INJ4) suitable for peak-and-hold, two stepper-motor predriver channels, a tachometer/HALL sensor interface (TACH), and a watchdog with challenge-response authentication that the host MCU must service via SPI. The watchdog uses a Markov-chain question/answer table similar to the Infineon TLE8888 family, providing ISO 26262-relevant fault detection against firmware runaway. The L9779WD is fabricated in ST's BCD6S process, which co-integrates bipolar, CMOS, and DMOS transistors on a single die. BCD6S allows the analog control blocks, the digital SPI/watchdog logic, and the high-current output stages to coexist on the same substrate, enabling monolithic protection and diagnostics that would otherwise require multiple ICs. The 64-pin HiQUAD package provides a leaded, through-hole-compatible surface-mount form factor with a robust thermal pad for sustained high-current output operation. Typical applications include gasoline port-fuel-injection (PFI) engine control units, electronic throttle control with idle stepper actuation, motorcycle and small-displacement engine ECUs, and integrated powertrain modules for body controllers with engine start-stop functionality. The device is also used in generator/motor control units and standby/backup controllers where automotive-grade reliability is required. When designing with the L9779WD, the host MCU firmware must implement the SPI watchdog service routine and respect the device's power-up timing (VCC5_MCU must settle before the MCU comes out of reset). The KEY_ON pin requires an external reverse-battery protection diode and internal pull-down, and the application circuit must keep VB and VSUP rails within the datasheet-defined transients to avoid TSD trips. This page synthesizes distributor pricing, drop-in alternatives, application design context, and engineering design notes not consolidated in the ST datasheet.
L9779WD-TR - Multifunction Engine Management PMIC | STMicroelectronics
The STMicroelectronics L9779WD-TR is a multifunction power-management IC designed for automotive engine management systems, integrating injector drivers, pre-drivers, sensors supplies, watchdog, and MSC interface in a 64-pin HiQUAD power package. The L9779WD-TR variant carries Tape and Reel packaging and the MSC (Microsecond Synchronous Communication) serial diagnostic interface. A multifunction PMIC for engine management is a mixed-signal IC that consolidates the analog and power stages required to run a gasoline or diesel Engine Control Unit (ECU). In modern ECUs it sits between the 12 V or 24 V battery rail and the microcontroller, providing regulated sensor rails, driving low-side and high-side injector stages, controlling lamp/relay pre-drivers, and supervising battery/ignition lines. This category falls within the broader PMIC family and the wider automotive power-management domain, and is typically paired with an MCU such as the SPC56 or SPC58 series in safety-relevant powertrain systems. Key features include five 5 V sensor supplies with current limiting, four low-side injector drivers (typically 4 x 1.5 A), four low-side lamp/relay pre-drivers, an ignition KEY_ON input with internal pull-down, an MSC diagnostic interface, and integrated watchdog/reset functionality. The device is qualified to automotive temperature grades and uses BCD6S mixed-signal process technology, giving it tolerance to load-dump transients common on 12 V vehicle buses. The L9779WD integrates an internal charge pump to drive N-channel FETs, an SPI/MSC configuration block, and a thermal-shutdown block, all sharing a single die. This high level of integration reduces ECU board area versus discrete driver implementations and helps shorten wire-harness routing because the high-current outputs are multiplexed from a single IC. Typical applications include gasoline and diesel engine ECUs, motorcycle ECUs, powersport vehicle controllers, and small-displacement powertrain modules. The wide operating voltage range and integrated diagnostics make it a common choice where a robust, AEC-Q100-grade power front-end is needed. When designing with the L9779WD-TR, pay particular attention to thermal layout of the HiQUAD-64 power package: the exposed pad must be soldered to a sufficiently large copper area to keep junction temperature within AEC-Q100 Grade-1 limits at worst-case injector current. This page synthesizes distributor pricing, MSC vs SPI variant differences, and practical design notes not consolidated in any single manufacturer document.
L9779WDM-TR - Automotive Quad Low-Side Driver | STMicroelectronics
The STMicroelectronics L9779WDM-TR is a quad low-side driver designed for automotive and industrial applications, featuring four independent open-drain outputs capable of driving resistive, inductive, and capacitive loads. It operates from a supply voltage range of 4.5V to 40V, with a maximum output current of 1A per channel. The device is housed in a 20-pin SOIC (SO-20) package, providing a compact solution for high-side and low-side switching in harsh environments. A low-side driver is a type of power switch that connects the load to ground when activated, commonly used in automotive body control modules, relay drivers, and solenoid actuators. It is a fundamental building block in power management and load control systems, sitting between the microcontroller and the load, translating low-voltage logic signals into high-current switching actions. The L9779WDM-TR integrates protection features such as overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in demanding conditions. Key features include a wide operating voltage range, low quiescent current, and built-in diagnostics via a serial peripheral interface (SPI) for fault reporting. The device supports PWM control up to 20 kHz, making it suitable for dimming and motor speed control. Its thermal shutdown and current limiting capabilities protect the IC and the load from damage, while the SPI interface allows for real-time monitoring and configuration. The L9779WDM-TR utilizes a robust BCD (Bipolar-CMOS-DMOS) process technology, enabling high-voltage operation with low on-resistance. The output stages are designed to handle inductive loads with built-in freewheeling diodes, reducing the need for external clamping components. The device also features a standby mode with very low current consumption, ideal for battery-powered automotive systems. Typical applications include automotive body control modules, relay and solenoid drivers, LED lighting control, and industrial PLC output stages. Its ability to drive multiple loads with individual control makes it a versatile choice for distributed control systems. The SPI interface simplifies integration with microcontrollers, reducing PCB complexity and component count. When designing with the L9779WDM-TR, ensure proper thermal management by providing adequate copper area on the PCB for heat dissipation. The device's thermal shutdown protection prevents damage, but sustained operation at high currents may require heatsinking. Additionally, place a decoupling capacitor close to the VCC pin to minimize voltage transients.
L9942-TR - Automotive Dual-Channel Low-Side Driver | STMicroelectronics
The L9942-TR is a dual-channel low-side driver IC from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching. It integrates two independent low-side power switches with a serial peripheral interface (SPI) for control and diagnostics, making it ideal for driving resistive, inductive, and capacitive loads such as relays, solenoids, and LEDs. The device operates over a wide supply voltage range of 4.5V to 40V and can deliver up to 1.5A per channel, with built-in protection features including overcurrent, overtemperature, and short-circuit protection. A low-side driver is a type of power switch that connects the load to ground when activated, allowing the microcontroller to control high-current loads with minimal logic-level drive. In the hierarchy of power management, a low-side driver falls under the category of power switches, which are essential components in automotive body control modules, industrial automation, and smart lighting systems. The L9942-TR specifically provides the interface between low-voltage logic and high-power loads, ensuring safe and efficient switching. Key features of the L9942-TR include its SPI interface for advanced diagnostics and configuration, a wide operating voltage range, and a low quiescent current of 50uA in standby mode. The device also features a 16-bit SPI protocol for reading fault status and controlling the output channels, making it suitable for complex automotive networks. Its thermal shutdown and overcurrent protection ensure reliable operation in harsh environments, while the exposed pad package enhances thermal dissipation. Technically, the L9942-TR is fabricated using STMicroelectronics' BCD (Bipolar-CMOS-DMOS) technology, which combines the benefits of bipolar, CMOS, and DMOS transistors to achieve high efficiency and robustness. The device includes a charge pump for gate driving, enabling low-side switching with minimal external components. The SPI interface operates at up to 5MHz, allowing fast communication with the host microcontroller, and the device supports daisy-chaining for multiple drivers on a single bus. Typical applications include automotive body control modules for controlling exterior lights, wipers, and relays, as well as industrial PLCs for driving solenoids and valves. The L9942-TR is also used in LED lighting systems for automotive and general lighting, where its current-sensing capability enables precise brightness control. Its wide input voltage range makes it suitable for both 12V and 24V systems. When designing with the L9942-TR, ensure proper PCB layout with adequate copper area for the exposed pad to manage thermal dissipation. The SPI lines should be kept short and shielded to avoid noise, and the supply voltage should be decoupled with a 100nF ceramic capacitor close to the VCC pin. The device's diagnostic features can be used to implement predictive maintenance in industrial applications.
L9950-TR - SPI Controlled 8-Channel Low-Side Driver | STMicroelectronics
The L9950-TR is a versatile 8-channel low-side driver from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching with advanced diagnostic capabilities. It integrates an SPI interface for control and diagnostics, making it ideal for driving resistive, inductive, and capacitive loads such as relays, solenoids, and LEDs. The device operates over a wide supply voltage range and provides comprehensive protection features including overcurrent, overtemperature, and open-load detection. A low-side driver is a type of power switch that connects the load to ground when activated, allowing the microcontroller to control high-side loads indirectly. In the hierarchy of power management, a low-side driver is a type of power switch, which falls under the broader category of power management ICs. These devices are essential in automotive body control modules, industrial PLCs, and other systems where multiple loads must be switched reliably. Key features of the L9950-TR include an SPI interface for serial control and diagnostics, eight low-side outputs with high current capability, and a wide operating voltage range. Each channel can handle continuous currents up to 1.2A, with peak currents up to 2A. The device supports 3.3V and 5V logic levels, making it compatible with modern microcontrollers. It also features a built-in 16-bit SPI protocol for reading fault status and controlling outputs. The L9950-TR is built using STMicroelectronics' advanced BCD (Bipolar-CMOS-DMOS) technology, which combines high-voltage capability with low on-resistance and fast switching. This technology enables the device to handle automotive load dump transients and provides excellent thermal performance. The device is available in a PowerSO-20 package, which offers a compact footprint with an exposed pad for enhanced thermal dissipation. Typical applications include automotive body control modules, industrial automation, and lighting control systems. In automotive applications, the L9950-TR can drive exterior lights, interior lighting, and small motors. In industrial settings, it can control solenoids, relays, and LED indicators. The SPI interface allows for real-time monitoring and control, reducing the need for additional discrete components. When designing with the L9950-TR, it is important to consider the thermal dissipation, especially when driving multiple channels at high currents. The exposed pad should be soldered to a large copper area on the PCB to ensure adequate heat sinking. Additionally, proper decoupling capacitors should be placed near the supply pins to minimize voltage transients.
L9951-TR - SPI Controlled 8-Channel Low-Side Driver | STMicroelectronics
The L9951-TR is a versatile 8-channel low-side driver from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching with diagnostic feedback. It integrates an SPI interface for control and diagnostics, making it ideal for driving resistive, inductive, and capacitive loads such as relays, solenoids, and LEDs. The device operates over a wide supply voltage range and provides comprehensive protection features including overcurrent, overtemperature, and open-load detection. A low-side driver is a type of power switch that connects the load to ground when activated, allowing the load to be powered from a positive supply. In automotive systems, low-side drivers are commonly used to control actuators, lamps, and motors, where the load is referenced to the battery positive terminal. The L9951-TR belongs to the family of smart power switches, which integrate protection and diagnostic functions into a single package, reducing external component count and improving system reliability. Key features of the L9951-TR include an 8-channel output stage with a maximum current capability of [DATA_NEEDED: maximum output current per channel] per channel, an SPI interface for serial control and readback of diagnostic information, and a wide operating voltage range of [DATA_NEEDED: operating voltage range]. The device also features a low quiescent current in standby mode, making it suitable for battery-powered applications. Its robust design includes protection against short circuits, overtemperature, and overvoltage, ensuring reliable operation in harsh environments. The L9951-TR is built using STMicroelectronics' advanced BCD (Bipolar-CMOS-DMOS) technology, which combines the benefits of bipolar, CMOS, and DMOS transistors to achieve high power handling with low power dissipation. The SPI interface allows for flexible control of each channel independently, enabling complex load management strategies. The device also includes a dedicated diagnostic pin for fault reporting, simplifying system-level monitoring. Typical applications for the L9951-TR include automotive body control modules, where it drives relays and lamps for lighting, wipers, and window lifts. It is also used in industrial automation for controlling solenoids and valves, and in smart home systems for driving LED lighting and small motors. The device's ability to handle inductive loads makes it suitable for driving relays and solenoids without additional freewheeling diodes, thanks to its integrated clamp circuitry. When designing with the L9951-TR, it is important to consider the thermal performance of the package, as high current loads can generate significant heat. Proper PCB layout with adequate copper area for heat dissipation is recommended. Additionally, the SPI interface should be configured with appropriate pull-up resistors and decoupling capacitors to ensure reliable communication. The device's diagnostic features can be used to implement predictive maintenance strategies, reducing downtime in industrial applications.
L9952-TR - SPI Controlled 8-Channel Low-Side Driver | STMicroelectronics
The L9952-TR is a monolithic integrated circuit from STMicroelectronics designed for automotive and industrial control applications. It provides eight low-side power outputs controlled via a standard SPI interface, with each channel capable of driving up to 1.2 A continuous current. The device operates from a supply voltage range of 4.5 V to 5.5 V for the logic section and 4.5 V to 28 V for the power stage, making it suitable for direct connection to automotive battery rails. The L9952-TR is available in a PowerSO-36 package, which offers excellent thermal performance for high-current switching applications. A low-side driver is a type of power switch that connects the load to ground when activated, commonly used to control relays, solenoids, LEDs, and other inductive or resistive loads in automotive body electronics. In the system hierarchy, the L9952-TR functions as a power management IC, specifically a smart power switch, integrating logic, protection, and diagnostic features into a single package. This integration reduces external component count and enhances system reliability compared to discrete MOSFET solutions. Key features of the L9952-TR include SPI-controlled outputs with daisy-chain capability, 16-bit data word for command and diagnosis, and built-in protection against overcurrent, overtemperature, and short-circuit conditions. Each output has a low-side driver with a typical on-resistance of 1.5 Ω, ensuring efficient power delivery. The device also features a 10-bit ADC for analog feedback of output currents, enabling precise load monitoring and fault detection. From a technical perspective, the L9952-TR utilizes a smart power technology that combines CMOS logic with vertical power MOSFETs, allowing for high integration and robust performance. The SPI interface operates at clock frequencies up to 5 MHz, enabling fast communication with microcontrollers. The device includes a fail-safe mode that turns off all outputs in case of a watchdog timeout or overtemperature event, enhancing system safety. Typical applications include automotive body control modules, relay drivers, LED lighting control, and industrial PLC output stages. The L9952-TR is particularly suited for driving inductive loads such as relays and solenoids, where its integrated freewheeling diodes and protection features simplify design. In automotive environments, the wide supply range and AEC-Q100 qualification ensure reliable operation under harsh conditions. When designing with the L9952-TR, it is essential to provide adequate decoupling on the supply pins and to ensure proper thermal management, as the PowerSO-36 package can dissipate significant power when driving multiple channels at high current. The SPI interface should be carefully configured to avoid bus contention, and the watchdog timer must be serviced regularly to prevent unintended shutdown.