L9958XP

Overview

The L9958XP is a microcontroller-driven DC motor driver featuring an integrated H-bridge and SPI interface. It supports forward, reverse, brake, and high-impedance modes with programmable soft-start for inrush current management. The device includes comprehensive diagnostics such as over-temperature, short-circuit, open-load, and overload protection for all outputs. It operates with low standby current consumption and provides current monitoring capabilities via dedicated outputs.

Feature Summary

• Integrated H-bridge architecture for bidirectional DC motor control
• SPI-based communication for mode selection and diagnostic retrieval
• Programmable soft-start functionality to manage high inrush currents
• Comprehensive output protection including thermal, short-circuit, and open-load detection

Applications

• Automotive DC motor actuation systems
• Door lock and window mechanisms
• Seat adjustment actuators
• HVAC flap control motors

Procurement Notes

Verify the specific suffix 'XP' against the official STMicroelectronics datasheet to confirm package type and temperature range. Confirm AEC-Q100 qualification status if automotive compliance is required. Check for 'NRND' (Not Recommended for New Designs) status in current distributor catalogs before finalizing procurement plans.

Selection Notes

Select this component when a single-chip solution for bidirectional DC motor control with digital diagnostics is required. Ensure the application voltage and current ratings align with the H-bridge specifications. Verify that the host microcontroller supports the required SPI protocol for configuration and fault reading.

Part Context

The L9958XP belongs to STMicroelectronics' portfolio of body electronics drivers designed for automotive environments. It complements other door actuator solutions like the L9950 by offering a focused H-bridge implementation. The series emphasizes robustness and diagnostic feedback for reliable operation in vehicle body applications.

Replacement Considerations

Consult official substitution guides for equivalent H-bridge drivers. Verify pin compatibility and electrical parameters against alternatives such as the L9950 or similar ST body electronics parts before replacement.

FAQ

Does the L9958XP support PWM control?

Yes, the device supports PWM control of the outputs for speed regulation and braking.

How are fault conditions reported?

Diagnostic information, including over-temperature, short-circuit, and open-load states, is available via the SPI interface.