Product Details L9945TR is an automotive-grade 8-channel configurable MOSFET pre-driver designed for controlling external power MOSFETs in 12V passenger vehicle and 24V commercial vehicle electrical systems. The device provides a flexible driver architecture that can be configured for different load-control requirements, making it suitable for automotive actuators, solenoids, motors and other safety-relevant electrical loads.The eight output channels can be configured for high-side or low-side MOSFET control, while the device can also operate in H-bridge configurations. Up to two independent H-bridges can be controlled, providing a practical solution for bidirectional motor or actuator applications. The device also supports peak-and-hold control for up to two loads, making it suitable for applications that require controlled current profiles.All outputs can be PWM controlled, allowing the external MOSFETs and connected loads to be managed through programmable switching signals. Programmable gate charge and discharge currents help control the switching behavior of external transistors and can be used to improve electromagnetic compatibility and reduce unwanted switching effects.L9945TR provides individual diagnostic functions for its output channels. The monitoring architecture can detect conditions including open load, short circuit to battery and short circuit to ground. The device also provides flexible overcurrent monitoring through external MOSFET drain-to-source voltage or an external shunt resistor, with programmable overcurrent thresholds available for individual channels.The device supports an operating battery supply range of 3.8V to 36V and is designed for automotive 12V and 24V battery systems. Its logic interface is compatible with 3.3V and 5V systems. Configuration, diagnostics and monitoring are handled through an SPI interface using a 32-bit communication protocol.For automotive safety and system control, L9945TR includes redundant external disable inputs and protection features for the driver outputs. The device also incorporates battery and die-temperature measurement capability through an integrated 10-bit ADC, allowing the host controller to monitor important system conditions.The L9945TR is supplied in a 64-pin TQFP package with an exposed pad and a 10mm × 10mm package footprint. It is AEC-Q100 qualified and specified for an automotive operating temperature range of -40°C to +150°C. The combination of configurable output stages, diagnostics, current monitoring and SPI control makes the device suitable for complex automotive load-control architectures.Typical applications include automotive body electronics, actuator control, solenoid driving, motor control, fuel and transmission-related systems, H-bridge applications and peak-and-hold loads. The configurable architecture allows one device to support different external MOSFET arrangements according to the electrical requirements of the vehicle system.When designing with L9945TR, engineers should select the appropriate external MOSFETs, gate-drive configuration, current-sensing method, protection thresholds and PCB thermal design according to the target load and vehicle electrical architecture. The exact device configuration and diagnostic behavior should be verified against the applicable STMicroelectronics documentation before production.