L99UDL01TR

Full Half-Bridge (H Bridge) Drivers Overview

The L99UDL01TR is a universal door lock IC featuring six integrated half-bridge outputs and support for two externally configured half-bridges. It utilizes a 4 MHz, 24-bit SPI interface for command and diagnostics. The device includes 10-bit digital current feedback for load integrity checks, PWM current regulation up to 25 kHz, and thermal warning/shutdown protection. Packaged in a TQFP64L exposed pad, it is AEC-Q100 qualified.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Six integrated fully protected half-bridges with independent or parallel configuration capabilities
• High-level diagnostics including open load, short to battery/ground, and 10-bit current feedback
• SPI-controlled programmability for on-time duration, direction, and current levels
• Reverse battery protection via external N-Ch MOSFET and two-stage charge pump

Full Half-Bridge (H Bridge) Drivers Applications

• Automotive door lock actuators
• Power window motor control
• Seat adjustment systems
• Trunk and tailgate locking mechanisms

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix 'TR' corresponds to the tape-and-reel packaging variant when ordering. Confirm that the target application requires the TQFP64L package footprint and that the system design accommodates the necessary external components for reverse battery protection and external half-bridge drivers as specified in the official datasheet.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for applications requiring high diagnostic coverage and flexible bridge configurations. Ensure the host microcontroller supports the required 4 MHz SPI speed. Consider the need for external MOSFETs if higher current loads exceed the integrated bridge capabilities or if reverse battery protection is mandated by the vehicle architecture.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to STMicroelectronics' automotive power management portfolio, specifically designed for body electronics. It integrates driver logic with advanced fault detection to enhance system reliability in harsh automotive environments. The L99UDL01 series provides a scalable solution for various actuator types within the vehicle's central locking and comfort systems.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.