L99UDL01

Full Half-Bridge (H Bridge) Drivers Overview

The L99UDL01 is an AEC-Q100 qualified universal door lock IC featuring six integrated fully protected 0.09 Ω half-bridges and two external half-bridge drivers. It supports PWM current regulation up to 25 kHz with outputs paralleled up to three in parallel. The device utilizes a 4 MHz 24-bit SPI interface for control and diagnostics, including 10-bit digital current feedback. It operates within a voltage range of 6 V to 26 V and provides thermal warning, shutdown protection, and reverse battery protection via an external N-Ch MOSFET.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Six integrated fully protected half-bridges with programmable PWM current regulation
• Comprehensive diagnostic capabilities including open load, short to battery, short to ground, and load integrity checks
• Flexible configuration allowing independent operation or parallel connection of up to three outputs
• Low-voltage operation support through a two-stage charge pump

Full Half-Bridge (H Bridge) Drivers Applications

• Automotive central door lock systems
• Trunk lock actuators
• Multiple brushed DC motor control in industrial applications
• Vending machines and coffee makers requiring adjustable speed

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific ordering suffix to ensure correct packaging and tape-and-reel specifications. Confirm that the procurement channel is authorized by STMicroelectronics to guarantee component authenticity and traceability. Check for any regional compliance requirements relevant to automotive-grade components before finalizing orders.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for designs requiring high integration of multiple actuator drivers with advanced fault detection. Ensure the application logic can handle the 4 MHz SPI interface for real-time current regulation. Verify that the system architecture supports the necessary external MOSFETs for reverse battery protection and high-current nodes if paralleling outputs.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to STMicroelectronics' portfolio of smart power distribution solutions designed for automotive and industrial markets. It is engineered to reduce wire-harness weight and cost while improving performance. The device complements microcontrollers like the SPC56B line by handling direct actuator driving and monitoring tasks.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Designers should consult official STMicroelectronics resources for potential cross-reference options or newer generation equivalents.

Full Half-Bridge (H Bridge) Drivers FAQ

How does the L99UDL01 manage high currents during inrush and stall phases?

The device features an integrated control loop that guarantees accurate current regulation via PWM, managing current flow to reduce motor stress and noise during critical phases.

What diagnostic information is available through the SPI interface?

The 10-bit digital current feedback allows for load integrity checks, while the device detects open loads, shorts to battery, and shorts to ground.