L99H01QF

Overview

The L99H01QF is a motor bridge driver designed for automotive DC-motor applications. It controls four external N-channel MOS transistors in a bridge configuration. The device features an integrated standard SPI interface for output control and diagnostics, alongside a configurable current sense amplifier with zero adjust for end-of-line trimming. Operating supply voltage ranges from 6 V to 28 V. It includes a central two-stage charge pump supporting 100% duty cycle and full RDSon down to 6 V for normal level MOSFETs. PWM operation is supported up to 30 kHz. The component also provides control for reverse battery protection MOSFETs and interfaces with external MOSFET thermal sensors.

Feature Summary

• Integrated standard serial peripheral interface (SPI) for comprehensive output control and diagnostic information reporting.
• Configurable current sense amplifier with zero adjust capability for precise end-of-line trimming.
• Central two-stage charge pump enabling 100% duty cycle operation and full RDSon at low voltages.
• Dedicated interface pin for connecting thermal sensors of external MOSFETs for enhanced thermal management.

Applications

• DC-motor driving in automotive applications
• Motor bridge driver circuits requiring SPI control
• Systems utilizing external N-channel MOSFETs in bridge configurations

Procurement Notes

Verify the specific suffix 'QF' against official STMicroelectronics documentation to confirm package type and temperature grade. Confirm availability status as the L99H01 series may be marked as Not Recommended for New Designs (NRND). Ensure compatibility with existing PCB footprints and SPI communication protocols before procurement.

Selection Notes

Select this component for automotive DC-motor applications requiring precise bridge control via SPI. It is suitable for designs needing integrated current sensing with trimmable offsets and robust thermal monitoring capabilities. Ensure the design supports the required 6 V to 28 V operating range and utilizes external N-channel MOSFETs compatible with the internal charge pump characteristics.

Part Context

The L99H01QF belongs to the L99H01 family of motor bridge drivers by STMicroelectronics. This family is specifically engineered for automotive environments, offering integrated protection and diagnostic features. The QF suffix typically denotes a specific package variant within this product line, distinct from other suffixes like XPTR or QFTR which may indicate different packaging or reel specifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify if alternative packages within the same L99H01 family (e.g., L99H01QFTR) offer equivalent functionality if the exact QF package is unavailable.