MC33887PNB

Overview

The MC33887PNB is a monolithic H-Bridge Power IC designed for closed-loop DC motor control, featuring integrated load current feedback. It supports continuous operation from 5.0 V to 40 V and delivers up to 5.0 A of continuous DC load current with active peak current limiting between 5.2 A and 7.8 A. The device incorporates internal control logic, a charge pump, gate drive, and low RDS(ON) MOSFET output circuitry. Load current feedback provides a proportional constant-current output suitable for microcontroller monitoring. It accepts PWM frequencies up to 10 kHz and includes protection features such as undervoltage shutdown, short circuit protection, and fault status reporting.

Feature Summary

• Integrated load current feedback for precise closed-loop torque and speed control
• Active current limiting with temperature-dependent threshold reduction
• Low standby current consumption in sleep mode
• Comprehensive diagnostic and protection capabilities

Applications

• Motorcycle Engine Control Unit (ECU)
• Small engine control systems
• Closed-loop brushed DC motor drives

Procurement Notes

Verify component authenticity through authorized NXP channels due to end-of-life status. Confirm package integrity and pin alignment against the PQFN-36 specification. Review latest datasheet revisions for any functional updates or handling instructions prior to integration into production designs.

Selection Notes

Select this component when precise current monitoring is required for motor regulation. The integrated feedback simplifies analog front-end design compared to discrete solutions. Ensure the application voltage remains within the 5 V to 40 V range and that thermal management accommodates the power dissipation at peak loads.

Part Context

This part belongs to NXP’s portfolio of motor and motion controllers, specifically targeting automotive and small engine applications. It complements MCU families like the S32K and KEA by providing high-power switching with intelligent diagnostics. The device is part of a lineage of H-bridge drivers optimized for robust industrial and automotive environments.

Replacement Considerations

The manufacturer indicates this product is obsolete and will be discontinued. Designers should evaluate alternative H-bridge drivers from the same family or newer generations that offer compatible pinouts and electrical specifications to ensure seamless migration.