MC33887

Overview

The MC33887 is an integrated H-bridge driver designed for automotive and industrial motion control, capable of driving loads up to 5A. It operates across a wide voltage range from 5V to 28V and features onboard current sensing and feedback for closed-loop control applications. The device includes a sleep mode that reduces current consumption to 25uA, making it suitable for battery-dependent systems.

Why Choose This Part

The MC33887 offers integrated fault status reporting and active current limiting to protect both the driver and the load from over-temperature or short-circuit conditions. Its internal charge pump allows for high-side gate drive without external components, simplifying the PCB layout for high-current paths.

Applications

Getting Started

When designing with the MC33887, ensure the HSOP-20 package is soldered to a large copper heat sink area to manage thermal dissipation during 5A peak loads. Interface the PWM and EN pins to a 5V microcontroller to control speed and direction, while monitoring the FB pin for real-time load current feedback.

Also Consider

DRV8871 TITexas Instruments - A more compact 8-pin alternative with integrated current regulation for applications with tighter space constraints.

MC33926 NXP Semiconductors - A similar H-bridge driver from the same manufacturer that supports slightly different diagnostic features and packaging.

Categories