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L9965T - Automotive Battery Monitoring IC | STMicroelectronics
The L9965T is an automotive-grade battery monitoring and protection IC from STMicroelectronics, designed for 12V lead-acid battery systems in vehicles. It integrates voltage sensing, current sensing, and temperature monitoring in a single package, enabling precise state-of-charge (SoC) and state-of-health (SoH) estimation. The device operates over a wide supply voltage range and communicates via a serial interface, making it suitable for battery management systems (BMS) in start-stop, micro-hybrid, and electric vehicle applications. A battery monitoring IC is a specialized analog front-end that measures battery voltage, current, and temperature to estimate battery state. It sits between the battery and the microcontroller in a BMS, converting raw analog signals into digital data for processing. The L9965T belongs to the battery management IC category, which is part of the broader power management IC family. This hierarchy is essential for understanding its role in automotive electronics. Key features of the L9965T include high-accuracy voltage measurement, integrated current sensing with programmable gain, and temperature sensing via external NTC thermistors. It supports a wide operating temperature range of -40°C to +125°C, making it suitable for under-hood automotive environments. The device also includes diagnostic features such as open-wire detection and overvoltage/undervoltage thresholds, enhancing system reliability. Technically, the L9965T uses a precision ADC with a reference voltage to digitize battery parameters. It communicates with the host microcontroller via an SPI or I2C interface, depending on the configuration. The IC is designed to operate from the battery supply directly, with an internal LDO for its own power, reducing external component count. Its low quiescent current is critical for minimizing battery drain in parked vehicles. Typical applications include automotive start-stop systems, where the battery must be monitored to ensure reliable engine restart, and electric vehicle (EV) battery management, where accurate SoC estimation extends battery life. The L9965T is also used in industrial backup power systems and telematics units that require battery health monitoring. When designing with the L9965T, ensure proper decoupling of the power supply pins and place the sense resistors close to the IC to minimize parasitic inductance. The SPI interface should be isolated if the battery voltage exceeds the microcontroller's logic levels. Also, consider the thermal performance of the package, as the IC may dissipate power during high-current sensing.
L9967 - Automotive Battery Monitoring IC | STMicroelectronics
The L9967 is an automotive-grade battery monitoring and balancing IC from STMicroelectronics, designed for 12V lead-acid and lithium-ion battery management systems (BMS). It integrates high-precision voltage and current sensing, cell balancing, and temperature monitoring in a compact QFN package. The device operates over a wide supply voltage range and communicates via SPI, making it suitable for automotive and industrial battery management applications. A battery monitoring IC is a specialized analog front-end (AFE) that measures individual cell voltages, pack current, and temperature to estimate state-of-charge (SoC) and state-of-health (SoH). It sits between the battery pack and the host microcontroller, providing accurate telemetry for charge control, protection, and balancing algorithms. In the system hierarchy, the L9967 is a battery management IC (BMIC) within the broader power management IC (PMIC) category, essential for ensuring battery safety and longevity. Key features of the L9967 include high-accuracy voltage measurement (typically ±10 mV), current sensing with integrated shunt amplifier, and passive cell balancing with internal MOSFETs. It supports up to 14 series cells and includes a 16-bit delta-sigma ADC for precise measurements. The device also features a programmable watchdog timer, overvoltage/undervoltage protection, and a robust SPI interface for daisy-chaining multiple devices. Technically, the L9967 employs a precision bandgap reference and a delta-sigma ADC architecture to achieve high measurement accuracy across temperature. Its integrated balancing FETs allow passive balancing currents up to 300 mA, reducing external component count. The device is AEC-Q100 qualified, ensuring reliability in harsh automotive environments, and operates from -40°C to +125°C. Typical applications include electric vehicle (EV) battery management, 48V mild-hybrid systems, and industrial energy storage. In an EV BMS, the L9967 monitors each cell group, communicates with the main controller via SPI, and triggers balancing during charging. Its high accuracy enables precise SoC estimation, extending battery life and ensuring safe operation. When designing with the L9967, ensure proper decoupling on the supply pins and a solid ground plane for accurate measurements. The SPI interface should be isolated if the battery pack is referenced to a different ground. Also, consider thermal management for the balancing FETs, as continuous balancing can dissipate significant power.
L9967-TR - Automotive Battery Monitoring IC | STMicroelectronics
The L9967-TR is an automotive-grade battery monitoring and balancing IC from STMicroelectronics, designed for 12V lead-acid and lithium-ion battery systems. It integrates a high-voltage analog front-end for cell voltage and temperature measurement, a 16-bit delta-sigma ADC, and a passive cell balancing controller. The device operates from a 6V to 72V supply range and communicates via SPI, making it suitable for battery management systems (BMS) in electric vehicles, hybrid vehicles, and industrial energy storage. A battery monitoring IC is a specialized analog front-end that measures individual cell voltages, temperatures, and pack current to enable state-of-charge (SoC) and state-of-health (SoH) estimation. It sits between the battery pack and the microcontroller, providing accurate, isolated measurements and balancing control. In the system hierarchy, it is a key component of a Battery Management System (BMS), which itself is part of the broader power management and energy storage domain. Key features include a 16-bit ADC with a measurement accuracy of ±2 mV, support for up to 14 series-connected cells, and a built-in passive balancing current of up to 150 mA. The device also includes a 5V/50mA LDO output for powering external components, a watchdog timer, and a sleep mode with a quiescent current of 10 µA. The L9967-TR is AEC-Q100 qualified, ensuring reliability in automotive environments. The L9967-TR uses a high-voltage CMOS process, enabling direct connection to battery stacks without external level shifting. Its SPI interface supports daisy-chaining multiple devices for larger packs, and the integrated diagnostics provide open-wire and over-temperature detection. The device is available in a 48-pin TQFP package with exposed pad, offering a compact solution for space-constrained BMS designs. Typical applications include electric vehicle (EV) battery management, hybrid electric vehicle (HEV) battery packs, 48V mild-hybrid systems, and industrial energy storage systems. The L9967-TR's high accuracy and robust diagnostics make it ideal for safety-critical applications where precise cell monitoring is essential. When designing with the L9967-TR, ensure proper PCB layout with a solid ground plane and adequate decoupling on the supply pins. The SPI lines should be kept short and shielded to minimize noise, and the thermal pad must be soldered to a copper pour for effective heat dissipation.
L9969 - Automotive H-Bridge Driver | STMicroelectronics | Motor Control
The STMicroelectronics L9969 is an automotive-grade integrated circuit designed for single and dual H-bridge motor control applications. It provides a full H-bridge power stage consisting of two half bridges, intended primarily for the control of DC motors, resistive loads, and inductive loads. The device is available in PowerSSO-24 (single H-bridge) and PowerSSO-36 (dual H-bridge) packages, offering flexible integration for various automotive actuator systems. An H-bridge driver is a power management IC that enables bidirectional current flow through a load, typically a DC motor, by controlling four switching elements (transistors) arranged in an H configuration. It sits within the motor driver hierarchy, which includes the power stage, gate drivers, protection circuitry, and control logic. The L9969 integrates these functions, providing output current direction control and supervising functions, making it a critical component in automotive actuator control systems. Key features of the L9969 include dual H-bridge capability (in the PowerSSO-36 variant), output current direction control, and comprehensive supervising functions such as overcurrent, overtemperature, and undervoltage protection. The device supports independent input driving commands for each half bridge, allowing flexible motor control configurations. It is designed to operate over a wide automotive temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The L9969 is built on STMicroelectronics' robust automotive-grade process technology, meeting the stringent quality and reliability standards of the automotive industry. It is AEC-Q100 qualified, ensuring suitability for safety-critical applications. The device incorporates advanced diagnostic features, including open-load detection and short-circuit protection, which are essential for functional safety in automotive systems. Typical applications include throttle control actuators, HVAC flap control, mirror adjustment, seat positioning, and other DC motor-driven actuators in vehicles. The dual H-bridge configuration allows control of two independent motors or a single motor with higher current capability by paralleling the outputs. The device's robust protection features and automotive qualification make it suitable for both body control modules and powertrain applications. When designing with the L9969, ensure proper PCB layout for the power stage to minimize parasitic inductance and resistance. Use appropriate bulk and decoupling capacitors on the power supply pins, and provide adequate thermal management through copper pours and vias. The device's SPI interface (where available) allows for high-speed configuration and diagnostics, while the parallel input interface provides simple, direct motor control.
L9970 - Automotive High-Side Driver | STMicroelectronics
The L9970 is an automotive-grade high-side driver from STMicroelectronics, designed for driving resistive, inductive, and capacitive loads in 12V automotive systems. It integrates a power MOSFET with advanced protection features, making it suitable for controlling lamps, relays, solenoids, and small motors. The device operates from a supply voltage range of 5.5V to 36V, with a typical output current capability of 1A, and is available in a PowerSO-10 package. 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 grounded loads. In automotive electronics, high-side drivers are essential for driving actuators, lights, and sensors while offering built-in protection against short circuits, overcurrent, and thermal overload. The L9970 belongs to the family of smart power switches, which integrate the power stage with control and diagnostic functions, reducing external component count and improving system reliability. Key features of the L9970 include a low quiescent current of 50 µA, making it suitable for always-on applications in battery-powered vehicles. It provides a logic-level input compatible with 3.3V and 5V microcontrollers, and includes an open-load detection feature that can be used for diagnostic purposes. The device also features a built-in clamp for inductive load demagnetization, protecting the output stage when switching off inductive loads. The L9970 is built using STMicroelectronics' VIPower M0 technology, which integrates a vertical P-channel power MOSFET with CMOS control logic on a single chip. This technology ensures low on-resistance (typically 0.5Ω) and fast switching, while the thermal shutdown and current limiting circuits protect the device under fault conditions. The PowerSO-10 package provides excellent thermal performance, with a junction-to-ambient thermal resistance of 40°C/W, allowing operation up to 150°C junction temperature. Typical applications include automotive body control modules, lighting control, relay drivers, and solenoid drivers. The device is also used in industrial automation for controlling DC loads. Its wide supply voltage range and robust protection make it a versatile choice for harsh environments. When designing with the L9970, ensure adequate PCB copper area for heat dissipation, especially when driving continuous currents near the maximum rating. The input pin should be protected with a series resistor if the microcontroller supply is noisy. Also, consider the inductive load demagnetization energy when switching off, as the internal clamp will dissipate the stored energy.
L9970-TR - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The L9970-TR is an automotive-grade dual H-bridge motor driver IC from STMicroelectronics, designed for driving DC motors and stepper motors in automotive and industrial applications. It integrates two full H-bridges capable of delivering continuous output current up to 1.2 A per channel, with a supply voltage range from 5.5 V to 36 V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for high-current applications. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current levels required to drive electric motors. In the system hierarchy, a motor driver sits between the MCU and the motor, acting as a power amplifier and protection interface. It typically includes H-bridge topologies for bidirectional control, current sensing, and diagnostic feedback. Motor drivers are essential in automotive systems such as power windows, seat adjustment, mirror positioning, and HVAC actuators, where precise and reliable motor control is critical. Key features of the L9970-TR include a wide operating voltage range of 5.5 V to 36 V, making it suitable for both 12 V and 24 V automotive electrical systems. Each H-bridge can source or sink up to 1.2 A continuous current, with peak current capability of 2 A. The device includes built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring robust operation in harsh automotive environments. The PowerSO-20 package offers a low thermal resistance of 35 °C/W, enabling efficient heat dissipation without external heatsinks in moderate load conditions. The L9970-TR utilizes a standard H-bridge architecture with four power MOSFETs per channel, controlled by logic-level inputs. The device supports both DC motor and stepper motor configurations, with the ability to control direction and speed via PWM signals. The integrated current sensing feature allows for closed-loop torque control, improving system efficiency and performance. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive applications. Typical applications include automotive power windows, seat adjustment, mirror control, HVAC actuators, and industrial automation systems. The wide input voltage range and robust protection features make it ideal for use in 12 V and 24 V systems, where reliability and safety are paramount. The device can also be used in robotics and mechatronics applications requiring bidirectional motor control. When designing with the L9970-TR, ensure adequate PCB copper area for thermal dissipation, especially when driving loads near the maximum current rating. Place decoupling capacitors close to the supply pins to minimize voltage transients. The device's enable and diagnostic pins allow for system-level fault monitoring, which is essential for safety-critical applications.
L9971 - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9971 is a dual H-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates two independent H-bridge outputs capable of driving DC motors, stepper motors, or other inductive loads with a supply voltage range of 5.5V to 36V. The device is available in a PowerSO-20 package, providing a compact solution for motor control in space-constrained automotive modules. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each capable of driving a DC motor in both directions (forward and reverse) and providing braking. It is a type of motor driver, which falls under the broader category of power management ICs. The L9971 integrates the power stage, control logic, and protection features, simplifying the design of motor control systems. Key features of the L9971 include a low quiescent current in standby mode, making it suitable for battery-powered automotive applications. It provides overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. The device also features a serial peripheral interface (SPI) for advanced control and diagnostics, allowing the microcontroller to monitor and configure the driver in real time. The L9971 uses a smart power technology that combines bipolar CMOS and DMOS (BCD) processes, enabling high-current driving capability with low power dissipation. The integrated protection and diagnostic features reduce the need for external components, lowering the overall system cost and improving reliability. The device is designed to meet automotive quality standards, including AEC-Q100 qualification, ensuring reliable operation over the automotive temperature range of -40°C to +150°C. Typical applications include automotive power windows, sunroofs, seat adjustment, and other DC motor control systems. The L9971 is also suitable for industrial automation, robotics, and other applications requiring bidirectional control of DC motors. Its wide supply voltage range and robust protection make it a versatile choice for various motor control designs. When designing with the L9971, ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal management. The PowerSO-20 package has an exposed pad that should be soldered to a large copper area for heat dissipation. Additionally, place decoupling capacitors close to the supply pins to reduce voltage spikes during switching.
L9971-TR - Automotive Quad Low-Side Driver | STMicroelectronics
The L9971-TR is a quad low-side driver IC from STMicroelectronics, designed for automotive and industrial applications requiring robust, high-current switching. It integrates four independent low-side drivers with built-in protection features, making it suitable for driving resistive, inductive, and capacitive loads such as relays, solenoids, and LEDs. The device operates over a wide supply voltage range and is available in a compact surface-mount package, facilitating space-constrained PCB designs. 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 rail. In automotive systems, low-side drivers are commonly used to control actuators, lamps, and motors, where the load is connected between the battery positive terminal and the driver output. The L9971-TR belongs to the family of smart power switches, which integrate protection and diagnostic features to enhance system reliability. Key features of the L9971-TR include four independent output channels, each capable of delivering continuous output current up to [DATA_NEEDED: output current per channel] A, with a maximum supply voltage of [DATA_NEEDED: maximum supply voltage] V. The device incorporates overcurrent protection, thermal shutdown, and undervoltage lockout to safeguard against fault conditions. Additionally, it features a serial peripheral interface (SPI) for advanced diagnostics and control, enabling real-time monitoring of output status and fault detection. The L9971-TR is built using STMicroelectronics' advanced BCD (Bipolar-CMOS-DMOS) technology, which combines high-voltage capability with low power consumption and fast switching performance. This technology ensures efficient operation and robust performance in harsh automotive environments, with an operating temperature range of -40°C to +150°C. The device is AEC-Q100 qualified, meeting the stringent quality and reliability standards required for automotive applications. Typical applications include automotive body control modules, lighting control, relay and solenoid drivers, and industrial automation systems. In automotive body control, the L9971-TR can drive exterior and interior lighting, power windows, and door locks, providing reliable switching with diagnostic feedback. In industrial settings, it can control valves, actuators, and small motors, offering protection and monitoring capabilities. When designing with the L9971-TR, it is essential to consider proper thermal management, as high output currents can generate significant heat. The exposed pad of the package should be soldered to a large copper area on the PCB to enhance heat dissipation. Additionally, appropriate decoupling capacitors should be placed near the supply pins to minimize voltage transients and ensure stable operation.
L9972 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9972 is a dual H-bridge motor driver designed for automotive applications, capable of driving two DC motors or one stepper motor with a supply voltage range of 5.5V to 36V. It integrates two full H-bridges with a maximum output current of 1.2A per channel, making it suitable for a variety of automotive actuators such as mirror adjustment, headlamp leveling, and HVAC flap control. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher current and voltage needed to drive a motor. In automotive systems, motor drivers are essential for controlling the position of mirrors, seats, and valves, and they must operate reliably over a wide temperature range and withstand harsh electrical conditions. The L9972 belongs to the family of automotive motor drivers, which are a subset of power management ICs used in body control modules and other vehicle subsystems. Key features of the L9972 include a low quiescent current of 50 µA in standby mode, which is critical for minimizing battery drain in vehicles. It also features overcurrent and thermal shutdown protection, ensuring robust operation in demanding environments. The device is available in a PowerSO-20 package, which provides excellent thermal performance for high-current applications. The L9972 is AEC-Q100 qualified, meeting the stringent quality standards required for automotive electronics. The L9972 uses a standard H-bridge topology with integrated freewheeling diodes, allowing bidirectional control of DC motors. It supports both parallel and serial control interfaces, with a SPI interface for advanced diagnostics and configuration. The device can operate in a half-bridge or full-bridge mode, providing flexibility in system design. The integrated protection features include undervoltage lockout, overvoltage clamp, and overtemperature shutdown, which help prevent damage to the motor and the driver itself. Typical applications for the L9972 include automotive mirror adjustment systems, headlamp leveling actuators, and HVAC flap control. In these applications, the L9972 provides precise motor control with low power dissipation, enabling efficient and reliable operation. The wide supply voltage range and robust protection features make it suitable for use in 12V and 24V automotive electrical systems. When designing with the L9972, it is important to ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal relief for the PowerSO-20 package. The SPI interface should be used for diagnostics and to configure the device for specific motor characteristics. Additionally, the supply voltage should be decoupled with a capacitor close to the VCC pin to reduce voltage transients.
L9972-TR - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9972-TR is a dual H-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates two independent H-bridge outputs capable of driving DC motors, stepper motors, or solenoids with a supply voltage range of 5.5V to 36V and a continuous output current of up to 1.2A per channel. The device is housed in a PowerSO-20 package with an exposed pad for enhanced thermal performance, making it suitable for space-constrained automotive modules. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each consisting of four power transistors (typically MOSFETs) arranged to control the direction and speed of a DC motor by selectively switching the polarity of the voltage applied to the motor terminals. This configuration allows for forward, reverse, brake, and coast operations, making it a fundamental building block in motor control systems. In the broader system hierarchy, the L9972-TR sits within the motor driver category, which is part of the power management IC family, ultimately contributing to the electromechanical actuation layer of automotive and industrial systems. Key features of the L9972-TR include a low quiescent current of 50 µA in standby mode, which is critical for battery-powered automotive applications to minimize drain when the ignition is off. The device also provides overcurrent, overtemperature, and undervoltage lockout protection, ensuring robust operation in harsh environments. The SPI interface allows for advanced diagnostics and configuration, enabling real-time monitoring of load conditions and fault status. The PowerSO-20 package offers a thermal resistance of 35 °C/W, facilitating heat dissipation in high-current applications. From a technical architecture perspective, the L9972-TR employs a CMOS process with integrated power MOSFETs, eliminating the need for external freewheeling diodes in many applications. The H-bridge outputs are designed to handle inductive loads with built-in flyback protection, reducing external component count and simplifying PCB layout. The SPI interface operates at up to 5 MHz, providing fast communication with a microcontroller for precise motor control and diagnostic feedback. Typical applications include automotive power window lifts, seat adjustment motors, mirror adjustment, and HVAC flap control. The device is also suitable for industrial automation, robotics, and small appliance motor drives where bidirectional control and diagnostic capabilities are required. Its wide supply voltage range and robust protection features make it a versatile choice for 12V and 24V systems. When designing with the L9972-TR, ensure adequate PCB copper area for the exposed pad to maintain junction temperature below the maximum rating. The SPI interface should be isolated from high-current traces to prevent noise coupling, and a bulk capacitor of at least 100 µF should be placed near the supply pins to handle inrush currents during motor start-up.
L9973 - Dual H-Bridge Motor Driver | STMicroelectronics | Automotive
The STMicroelectronics L9973 is a dual H-bridge motor driver designed for automotive and industrial applications, capable of driving two DC motors or one stepper motor with a supply voltage range of 5.5V to 36V. It integrates two full H-bridges with a continuous output current of 1.2A per channel and a peak current of 2A, making it suitable for a variety of actuator and motor control tasks. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current needed to drive an electric motor. In the system hierarchy, a motor driver sits between the logic-level controller and the motor itself, providing the necessary power amplification, protection, and control features. The L9973 belongs to the category of power management ICs, specifically motor drivers, which are essential in automotive body control modules, HVAC systems, and industrial automation. Key features of the L9973 include a wide operating voltage range, low quiescent current, and integrated protection features such as overcurrent, overtemperature, and undervoltage lockout. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure the driver. The package is a PowerSO-20, which provides excellent thermal performance for high-current applications. The L9973 uses a standard H-bridge topology with four power MOSFETs per channel, enabling bidirectional motor control. The SPI interface allows for daisy-chaining multiple devices, simplifying PCB layout in multi-motor systems. The device is designed to meet automotive quality standards, including AEC-Q100 qualification, ensuring reliable operation in harsh environments. Typical applications include automotive power windows, seat adjustment, mirror control, and HVAC flap control. The wide voltage range and robust protection make it ideal for industrial actuators and robotics as well. The SPI interface provides real-time diagnostics, which is critical for safety-critical applications. When designing with the L9973, ensure proper PCB layout with adequate copper area for heat dissipation, especially when driving high currents. The SPI lines should be kept short and shielded to avoid noise, and the supply pins should be decoupled with a 100nF ceramic capacitor close to the device.
L9973-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9973-TR is a quad half-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2A continuous per channel, with a supply voltage range of 5.5V to 36V. The device is housed in a PowerSO-20 package, providing a compact solution for driving brushed DC motors, stepper motors, and resistive loads. A half-bridge driver is a power management IC that controls the direction and speed of a DC motor by selectively connecting the motor terminals to the supply voltage or ground. In a quad half-bridge configuration, four such bridges are integrated into a single package, enabling independent control of multiple loads or the implementation of full H-bridge topologies for bidirectional motor control. This architecture is fundamental in automotive body control modules, where multiple actuators such as window lifts, mirror adjusters, and seat motors require precise and efficient switching. Key features of the L9973-TR include a low quiescent current of 50 uA in standby mode, making it suitable for always-on automotive applications. The device offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. It also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure output behavior. The PowerSO-20 package with exposed pad provides excellent thermal performance, with a thermal resistance of 35 C/W, enabling reliable operation at high ambient temperatures up to 125C. The L9973-TR utilizes a smart power technology that integrates CMOS control logic with high-current DMOS output stages. This monolithic approach reduces external component count and improves reliability compared to discrete solutions. The SPI interface supports daisy-chaining of multiple devices, simplifying wiring in multi-motor systems. The device also includes a dedicated enable pin for fast shutdown in emergency situations. Typical applications include automotive body control modules, DC motor drivers for window lifts and wiper systems, stepper motor drivers for instrument clusters, and industrial automation actuators. The wide supply voltage range and robust protection features make it ideal for 12V and 24V systems. When designing with the L9973-TR, ensure adequate PCB copper area for heat dissipation, especially when driving multiple channels at high current. The SPI interface requires proper pull-up resistors on the data lines, and the enable pin should be tied to a controlled logic signal to prevent unintended operation during power-up.
L9974 - Automotive Dual H-Bridge Driver | STMicroelectronics
The STMicroelectronics L9974 is a dual H-bridge driver designed for automotive DC motor control applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and a continuous output current of 1.2A per channel (peak 2A). The device is housed in a PowerSO-20 package with exposed pad for enhanced thermal performance. A dual H-bridge driver is a power management IC that controls the direction and speed of DC motors by selectively switching four transistors per bridge. It sits within the motor driver hierarchy: dual H-bridge driver -> motor driver -> power management IC -> semiconductor. This architecture allows bidirectional current flow through the motor, enabling forward, reverse, and braking operations. The L9974 is specifically optimized for automotive environments, meeting AEC-Q100 Grade 1 requirements for operation from -40°C to +150°C. Key features include a low quiescent current of 50 µA in standby mode, SPI interface for diagnostics and control, and integrated protection features such as overcurrent, overtemperature, and undervoltage lockout. The device also provides a current sense output for closed-loop motor control, enabling precise torque and speed regulation. The SPI interface allows real-time monitoring of fault conditions and configuration of the driver parameters, making it suitable for advanced automotive body control modules. The L9974 utilizes a smart power technology that combines CMOS control logic with high-voltage power MOSFETs on a single die. This integration reduces external component count and improves reliability. The PowerSO-20 package offers a thermal resistance of 35°C/W, allowing efficient heat dissipation in high-current applications. The device is designed to withstand load dump and reverse battery conditions, ensuring robust operation in harsh automotive environments. Typical applications include automotive HVAC actuators, headlamp leveling, mirror adjustment, and seat positioning systems. The dual H-bridge configuration allows independent control of two motors, reducing board space and system cost. The SPI interface simplifies wiring and enables advanced diagnostic features required by modern vehicle architectures. When designing with the L9974, ensure proper PCB layout with adequate copper area for thermal management. The exposed pad must be soldered to a thermal via array to achieve the specified thermal performance. Additionally, place a 100 nF ceramic capacitor close to each supply pin to suppress high-frequency noise and ensure stable operation.
L9974-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9974-TR is a quad half-bridge driver IC from STMicroelectronics, designed for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2A continuous per channel, with a supply voltage range of 5.5V to 36V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for high-current switching. A half-bridge driver is a power management IC that controls the direction and speed of DC motors by selectively connecting the motor terminals to the supply or ground. In a full H-bridge configuration, two half-bridges are combined to drive a motor bidirectionally. The L9974-TR simplifies this by integrating four half-bridges, allowing control of two DC motors or one stepper motor with minimal external components. This category sits within the broader hierarchy of motor drivers, which are essential in automotive systems such as power windows, seat adjustment, and mirror positioning. Key features of the L9974-TR include a low quiescent current of 10uA in standby mode, making it suitable for battery-powered automotive applications. It offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in harsh environments. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure output states. The PowerSO-20 package has a thermal resistance of 35 C/W, enabling efficient heat dissipation. Technically, the L9974-TR uses a smart power technology that integrates CMOS control logic with high-current DMOS output stages. This architecture provides low on-resistance (0.5 ohm typical) and fast switching, reducing power losses. The SPI interface operates at up to 5 MHz, enabling real-time monitoring and control. The device is AEC-Q100 qualified, meeting the stringent reliability standards for automotive electronics. Typical applications include automotive body control modules, DC motor drivers for power windows and mirrors, and industrial automation systems. The wide input voltage range and robust protection make it ideal for 12V and 24V systems. In a power window application, the L9974-TR drives the window motor bidirectionally, with the SPI providing diagnostic feedback for stall detection. When designing with the L9974-TR, ensure proper PCB layout with adequate copper area for thermal dissipation. Place the supply decoupling capacitor close to the VCC pin to minimize voltage spikes during switching. The SPI lines should be kept short and shielded to avoid noise coupling.
L9975 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9975 is an automotive-grade dual H-bridge motor driver designed for DC motor control in automotive applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and output current up to 1.2A per channel. The device is housed in a PowerSO-20 package, providing robust thermal performance for automotive environments. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current needed to drive a motor. In the system hierarchy, the L9975 sits between the MCU and the motor, acting as a power amplifier and protection interface. It is a key component in automotive body control modules, where it controls window lifts, mirror adjustment, and seat positioning. Key features of the L9975 include a low quiescent current of 10 uA in standby mode, making it suitable for always-on automotive modules. It offers overcurrent, overtemperature, and short-circuit protection, ensuring reliable operation in harsh environments. The device also features a serial peripheral interface (SPI) for diagnostics and control, allowing the MCU to read fault status and configure the driver. The L9975 uses a standard H-bridge topology with integrated freewheeling diodes, eliminating the need for external clamping diodes. Its SPI interface enables advanced diagnostics, including open-load detection and overcurrent reporting. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive electronics. Typical applications include automotive window lift systems, mirror adjustment, seat positioning, and HVAC damper control. The wide supply voltage range and robust protection make it ideal for direct connection to the vehicle battery, withstanding load-dump and cold-crank transients. When designing with the L9975, ensure proper PCB layout with adequate copper area for thermal dissipation. The PowerSO-20 package has a thermal resistance of 35 C/W, so at maximum current and high ambient temperatures, a heatsink or large copper pour is recommended. Additionally, place the SPI lines with proper filtering to avoid noise coupling from the motor lines.
L9975-TR - Automotive Quad Half-Bridge Driver | STMicroelectronics
The L9975-TR is a monolithic quad half-bridge driver designed by STMicroelectronics for automotive and industrial DC motor control applications. It integrates four independent half-bridge outputs capable of driving loads up to 1.2 A continuous per channel, with a supply voltage range of 5.5 V to 36 V. The device is housed in a 28-pin SOIC (SO-28) package with an exposed pad for enhanced thermal performance, and is qualified to AEC-Q100 Grade 1 for operation from -40°C to +150°C junction temperature. A half-bridge driver is a power management IC that contains two power switches (high-side and low-side) per output, allowing bidirectional current flow through a load connected between the output and ground or supply. This topology enables forward, reverse, and braking control of DC motors, as well as driving resistive, inductive, or capacitive loads. The L9975-TR belongs to the family of motor driver ICs, which are essential in automotive body electronics, HVAC actuators, and industrial automation. Key features include a low quiescent current of 50 µA in standby mode, making it suitable for always-on automotive modules. Each output has built-in overcurrent protection, thermal shutdown, and a diagnostic output that reports fault conditions via a serial interface. The device also features a SPI-compatible control interface for configuring outputs and reading status, enabling precise motor control and system monitoring. The L9975-TR uses a smart power technology that integrates CMOS control logic with DMOS power stages, providing efficient switching with low RDS(on) of 0.5 Ω per switch. This architecture minimizes power dissipation and supports PWM frequencies up to 20 kHz for quiet motor operation. The device includes a charge pump for high-side gate drive, allowing operation with a single supply without external bootstrap components. Typical applications include automotive HVAC flap control, headlamp leveling, mirror adjustment, and industrial valve actuation. The wide supply range and robust protection make it ideal for 12 V and 24 V systems. In automotive environments, the AEC-Q100 qualification ensures reliability under extreme temperature and vibration. When designing with the L9975-TR, ensure proper PCB layout with adequate copper area for the exposed pad to dissipate heat. The SPI interface requires careful timing and pull-up resistors on the data lines. For high-current loads, consider external freewheeling diodes to protect the outputs during inductive switching.
L9976 - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The STMicroelectronics L9976 is an automotive-grade dual H-bridge motor driver designed for DC motor control in body and chassis applications. It integrates two full H-bridges capable of driving two DC motors or one stepper motor, with a supply voltage range of 5.5V to 36V and a continuous output current of up to 1.2A per channel. The device is housed in a 28-pin PowerSO-28 package with an exposed pad for enhanced thermal performance. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher-current, higher-voltage signals needed to drive electric motors. In automotive systems, motor drivers are essential for functions such as window lifts, mirror adjustment, seat positioning, and HVAC actuators. The L9976 sits within the power management and actuation hierarchy, bridging the digital control domain (MCU) and the electromechanical domain (motors). Key features of the L9976 include a low RDS(on) of 0.5 ohm per switch, which minimizes power dissipation and improves efficiency. It provides overcurrent, overtemperature, and undervoltage protection, ensuring robust operation in harsh automotive environments. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to read fault status and configure operating modes. The PowerSO-28 package offers a thermal resistance of 35 C/W, enabling reliable operation at high ambient temperatures. The L9976 utilizes a standard H-bridge topology with integrated freewheeling diodes, eliminating the need for external clamping components. The SPI interface supports daisy-chaining of multiple devices, simplifying PCB layout in multi-motor systems. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of automotive applications. Typical applications include automotive body control modules, power window lift systems, mirror adjustment units, and HVAC actuator control. The wide supply voltage range accommodates both 12V and 24V automotive electrical systems, and the low quiescent current of 10 uA in standby mode helps reduce battery drain when the vehicle is off. When designing with the L9976, ensure adequate PCB copper area for thermal dissipation, especially when driving motors at high currents. The SPI interface should be properly configured for fault monitoring, and the supply pins must be decoupled with a 100nF ceramic capacitor close to the device to suppress switching noise.
L9976-TR - Automotive Dual H-Bridge Motor Driver | STMicroelectronics
The L9976-TR is an automotive-grade dual H-bridge motor driver IC from STMicroelectronics, designed for driving DC motors and stepper motors in automotive applications. It integrates two full H-bridges capable of delivering continuous output current up to 1.2 A per channel, with a supply voltage range of 5.5 V to 36 V. The device is housed in a PowerSO-20 package, providing excellent thermal performance for demanding automotive environments. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher-current, higher-voltage signals needed to drive electric motors. Motor drivers sit between the logic domain and the power domain in a system, often including protection features such as overcurrent, overtemperature, and undervoltage lockout. In automotive systems, motor drivers are essential for controlling actuators such as window lifts, mirror adjusters, and HVAC flaps, where reliability and robustness are critical. Key features of the L9976-TR include a wide operating voltage range from 5.5 V to 36 V, making it suitable for both 12 V and 24 V automotive electrical systems. Each H-bridge can deliver up to 1.2 A continuous current, with peak current capability of 2 A. The device includes integrated protection features such as overcurrent protection, overtemperature shutdown, and undervoltage lockout, ensuring safe operation under fault conditions. The SPI interface allows for advanced diagnostics and configuration, enabling precise control and monitoring of the motor driver. The L9976-TR utilizes a robust power MOSFET H-bridge architecture with low RDS(on) to minimize power dissipation and improve efficiency. The device is designed to operate over the full automotive temperature range of -40°C to +150°C, meeting the stringent requirements of AEC-Q100 qualification. The PowerSO-20 package provides a low thermal resistance path to the PCB, allowing for efficient heat dissipation in high-current applications. Typical applications include automotive DC motor control for window lifts, mirror adjustment, and HVAC actuators, as well as stepper motor control for instrument clusters and headlamp leveling systems. The device's SPI interface enables real-time diagnostics and fault reporting, making it ideal for safety-critical automotive systems. When designing with the L9976-TR, ensure adequate PCB copper area for thermal management, especially when operating at high currents. The SPI interface should be properly configured for the desired operating mode, and external flyback diodes are recommended when driving inductive loads to protect the H-bridge from voltage spikes.
L9977 - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9977 is an automotive-grade dual H-bridge driver IC from STMicroelectronics, designed for controlling DC motors and inductive loads in automotive body applications. It integrates two full H-bridges capable of driving up to 5.5 A continuous current per channel, with a wide operating supply voltage range of 5.5 V to 36 V. The device is housed in a PowerSO-36 package, providing excellent thermal performance for high-current applications. An H-bridge motor driver is a power management IC that allows bidirectional control of a DC motor by selectively switching four transistors in an 'H' configuration. It is a fundamental building block in automotive electronics, enabling functions such as window lift, seat adjustment, and mirror positioning. The L9977 belongs to the family of motor drivers, which are part of the broader power management IC category, and it is specifically optimized for the harsh automotive environment. Key features of the L9977 include a low quiescent current of 50 µA in standby mode, making it suitable for always-on automotive modules. It offers overcurrent, overtemperature, and short-circuit protection, ensuring robust operation in fault conditions. The device also features a serial peripheral interface (SPI) for advanced diagnostics and control, allowing the microcontroller to monitor and configure the driver in real time. The PowerSO-36 package with exposed pad ensures efficient heat dissipation, enabling continuous operation at high currents. From a technical perspective, the L9977 utilizes a smart power technology that integrates logic, protection, and power stages on a single die. This reduces external component count and improves reliability. The SPI interface supports daisy-chaining of multiple devices, simplifying PCB layout in multi-motor systems. The device is AEC-Q100 qualified, meeting the stringent quality and reliability standards required for automotive applications. Typical applications include automotive body control modules, power window lift systems, seat position adjustment, and mirror folding. The L9977's ability to handle high currents and its robust protection features make it ideal for driving DC motors in these systems. Additionally, its low standby current is critical for battery-powered vehicles to minimize parasitic drain. When designing with the L9977, ensure proper PCB layout with adequate copper area for thermal management, especially when driving high currents continuously. The SPI interface should be configured correctly to enable fault reporting and diagnostic functions. Also, consider adding external flyback diodes or using the integrated freewheeling diodes to protect against inductive load transients.
L9977-TR - Dual Half Bridge Driver, 1.2A, 7-16.5V | STMicroelectronics
The L9977-TR is a monolithic integrated dual half bridge driver from STMicroelectronics, designed in BCD technology to drive various loads including DC motors. It is optimized for automotive electronics environmental conditions, delivering robust performance in harsh operating environments. The device provides two half-bridge outputs with a typical ON-resistance of 0.7 ohm and an output current capability of ±1.2 A, operating from a supply voltage range of 7 V to 16.5 V. The L9977-TR is available in a 20-pin SOIC (SO-20) package, suitable for surface-mount assembly. A dual half bridge driver is a power management IC that contains two independent half-bridge output stages, each capable of sourcing and sinking current to drive inductive or resistive loads such as DC motors, solenoids, and relays. In the system hierarchy, a dual half bridge driver falls under motor drivers, which are a subset of power management ICs, ultimately part of the broader semiconductor category. This component type is essential in automotive body control modules, where it controls actuators like window lifts, mirror adjustments, and seat positioning. Key features of the L9977-TR include half-bridge outputs with typical RON of 0.7 ohm, output current capability of ±1.2 A, operating supply voltage from 7 V to 16.5 V, and supply overvoltage protection for VVS up to 40 V. The device also features very low quiescent current, making it suitable for always-on automotive applications. The BCD (Bipolar-CMOS-DMOS) technology combines the advantages of bipolar, CMOS, and DMOS processes, enabling high-voltage capability, low power consumption, and high current drive in a single monolithic IC. The L9977-TR is designed for automotive electronics, withstanding the demanding environmental conditions such as wide temperature ranges, supply transients, and electromagnetic interference. The overvoltage protection up to 40 V ensures the device can survive load dump and other supply transients common in automotive power systems. The low ON-resistance minimizes power dissipation, improving thermal performance and system efficiency. Typical applications include automotive body control modules, DC motor drivers for window lifts and mirror adjustment, and relay drivers. The device's ability to drive inductive loads makes it suitable for solenoid and actuator control. In a typical automotive body control module, the L9977-TR interfaces directly with a microcontroller, receiving logic-level control signals and driving the load with the required current and voltage. When designing with the L9977-TR, ensure adequate PCB copper area for thermal dissipation, especially when driving loads near the maximum current rating. The supply voltage must be decoupled with a capacitor close to the VCC pin to handle transient currents. The logic inputs are compatible with 5V microcontrollers, but verify the input thresholds against the specific microcontroller's output levels.
L9978 - Multifunction IC for Automotive Engine Management | STMicroelectronics
The STMicroelectronics L9978 is a multifunction power management IC (PMIC) specifically designed for automotive engine management systems. It integrates multiple voltage regulators and pre-drivers in a single 100-pin LQFP-EP (14x14) package, enabling compact and reliable power distribution in engine control units (ECUs). The device is AEC-Q100 qualified and engineered to support ISO26262-compliant system designs, making it suitable for safety-critical automotive applications. A PMIC (Power Management Integrated Circuit) is a class of integrated circuits that manages power requirements of a host system. In automotive engine management, the L9978 consolidates several power rails and driver functions that would otherwise require multiple discrete components. This integration reduces board space, improves thermal performance, and enhances system reliability. The L9978 sits within the hierarchy of power management ICs, specifically as a multifunction automotive PMIC, which itself is a subset of application-specific power management solutions. Key features of the L9978 include one pre-boost regulator, one pre-buck regulator, a linear 5V regulator with 1A output current, and three independent self-protected 5V tracking regulators with 150mA output each. Additionally, it provides five channels of pre-drivers for external FET drivers, with pre-drivers 1 and 3 configurable for O2H (oxygen sensor heater) loads using an external shunt resistor on the source of the external N-channel MOSFET. This flexibility allows the L9978 to support various engine management topologies. The L9978 is engineered for ISO26262 compliance, which is critical for automotive functional safety. Its AEC-Q100 qualification ensures it meets stringent automotive quality and reliability standards. The device operates over an extended temperature range and includes comprehensive protection features such as overcurrent, overvoltage, and thermal shutdown, ensuring robust operation in harsh automotive environments. Typical applications include engine control units (ECUs), transmission control units, and other automotive body control modules that require multiple regulated power rails and pre-driver outputs. The L9978 is particularly well-suited for gasoline and diesel engine management systems where precise control of fuel injectors, ignition coils, and oxygen sensor heaters is essential. When designing with the L9978, careful attention must be paid to the external FET selection and the layout of the pre-driver outputs to minimize parasitic inductance and ensure proper switching behavior. The tracking regulators require appropriate output capacitors for stability, and the thermal pad of the LQFP-EP package should be connected to a solid ground plane for effective heat dissipation.
L9978-TR - Automotive Quad Low-Side Driver | STMicroelectronics
The STMicroelectronics L9978-TR is a quad low-side driver designed for automotive and industrial applications, featuring four independent open-drain outputs capable of driving resistive, inductive, or capacitive loads. It operates from a supply voltage range of 4.5V to 36V, with a maximum output current of 1.2A per channel, and is available in a PowerSO-20 package with exposed pad for enhanced thermal performance. 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 actuators in automotive body control modules and industrial control systems. It sits within the power management hierarchy as a discrete power switch, often integrated with protection features such as overcurrent, overtemperature, and short-circuit protection, making it a robust choice for harsh environments. Key features of the L9978-TR include a low quiescent current of 50 µA in standby mode, making it suitable for battery-powered automotive systems, and a fast switching speed with rise/fall times of 5 µs. Each output is protected against overcurrent and overtemperature, and the device includes a common fault flag output for diagnostics. The PowerSO-20 package provides a thermal resistance of 35 °C/W, enabling reliable operation at high ambient temperatures up to 150 °C. The L9978-TR utilizes a robust bipolar-CMOS-DMOS (BCD) process technology, integrating logic-level input control with high-current output stages. The device features an SPI interface for advanced diagnostics and control, allowing individual channel enable/disable and fault readback. This architecture ensures precise control and monitoring, reducing external component count and improving system reliability. Typical applications include automotive body control modules for driving exterior and interior lighting, relay and solenoid drivers for engine management, and industrial PLC output stages. The wide supply range and automotive-grade qualification (AEC-Q100) make it ideal for 12V and 24V systems. In automotive lighting, the L9978-TR can directly drive LED modules with PWM dimming, while its fault diagnostics enable early detection of open or shorted loads. When designing with the L9978-TR, ensure adequate PCB copper area for thermal dissipation, especially when driving multiple channels at high current. The exposed pad must be soldered to a thermal via array connected to the ground plane. Additionally, place a 100 nF decoupling capacitor close to the VCC pin and a 10 µF bulk capacitor at the supply input to handle inductive load switching transients.
L9979 - Automotive Quad Low-Side Driver | STMicroelectronics
The STMicroelectronics L9979 is an automotive-grade quad low-side driver designed for driving resistive, inductive, and capacitive loads in 12V and 24V vehicle electrical systems. It integrates four independent low-side output stages with built-in protection features, making it suitable for relay, solenoid, and LED actuation in body control modules, transmission control units, and lighting systems. 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. In automotive systems, low-side drivers are commonly used to control relays, solenoids, and lamps, where the load is referenced to the battery positive rail. The L9979 belongs to the family of smart power switches, which integrate protection and diagnostic functions to enhance system reliability. Key features of the L9979 include four low-side outputs with a maximum continuous current of [DATA_NEEDED: maximum continuous output current] per channel, an operating voltage range of [DATA_NEEDED: operating voltage range], and built-in overcurrent, overtemperature, and short-circuit protection. The device also provides a serial peripheral interface (SPI) for advanced diagnostics and control, enabling real-time monitoring of output states and fault conditions. The L9979 is available in a [DATA_NEEDED: package type] package, which is designed for automotive PCB assembly and thermal performance. The L9979 utilizes a robust power MOSFET technology with integrated protection circuitry, ensuring reliable operation in harsh automotive environments. The SPI interface allows a microcontroller to configure output parameters, read diagnostic information, and control each channel independently. The device is designed to meet AEC-Q100 automotive qualification standards, ensuring its suitability for mission-critical applications. Typical applications include automotive body control modules (BCMs) for controlling exterior and interior lighting, relay drivers for power distribution, solenoid drivers in transmission control units, and LED drivers for daytime running lights. The L9979's ability to handle inductive loads with built-in freewheeling protection makes it ideal for relay and solenoid actuation. When designing with the L9979, ensure proper PCB layout with adequate copper area for thermal dissipation, and place decoupling capacitors close to the power supply pins. The SPI interface should be isolated from high-current traces to minimize noise coupling. For inductive loads, verify that the freewheeling protection is sufficient for the load's energy rating.
L9979-TR - Automotive Dual H-Bridge Driver | STMicroelectronics
The L9979-TR is an automotive-grade dual H-bridge driver IC from STMicroelectronics, designed for controlling DC motors and inductive loads in 12V automotive systems. It integrates two independent H-bridge outputs capable of driving continuous currents up to 1.2A per channel, with a peak current capability of 2A. The device operates from a supply voltage range of 5.5V to 36V, making it suitable for a wide range of automotive power rails. It is available in a PowerSO-20 package, which provides excellent thermal performance for high-current applications. A dual H-bridge driver is a power management IC that contains two full H-bridge circuits, each capable of driving a DC motor bidirectionally or controlling two separate loads. It is a type of motor driver, which falls under the broader category of power management ICs. The L9979-TR integrates the power stage, control logic, and protection features, simplifying the design of motor control systems in vehicles. Key features of the L9979-TR include a low quiescent current of 10 µA in standby mode, which is critical for battery-powered automotive applications. It also features overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring robust operation in harsh environments. The device is AEC-Q100 qualified, meeting the stringent reliability requirements of the automotive industry. Its SPI interface allows for advanced diagnostics and control, enabling real-time monitoring of load conditions and fault status. The L9979-TR uses a standard CMOS process technology, which balances performance and cost. The integrated protection features reduce the need for external components, saving board space and improving system reliability. The device's ability to operate at high temperatures (up to 150°C junction) makes it suitable for under-hood applications where ambient temperatures can be extreme. Typical applications include automotive HVAC actuators, mirror adjustment, seat positioning, and other DC motor control functions. The L9979-TR's dual H-bridge configuration allows it to control two motors independently, making it ideal for applications requiring multiple actuators. Its SPI interface enables precise control and diagnostics, which is essential for advanced automotive systems. When designing with the L9979-TR, it is important to ensure proper PCB layout to minimize parasitic inductance and resistance in the power path. Adequate decoupling capacitors should be placed close to the supply pins to handle transient currents. The thermal pad should be connected to a large copper area to dissipate heat effectively, especially when driving high currents continuously.