MC33887 | H-Bridge, Brushed DC Motor Driver

Overview

The NXP^® MC33887 is a monolithic H-Bridge power IC with a load current feedback feature making it ideal for closed-loop DC motor control.

The IC incorporates internal control logic, charge pump, gate drive, and low RDS(ON) MOSFET output circuitry
Able to control inductive loads with continuous DC load currents up to 5.0 A, and with peak current active limiting between 5.2 A and 7.8 A
Output loads can be pulse width modulated at frequencies up to 10 kHzdervoltage, overtemperature, and overcurrent conditions are detected and reported via a status flag output
The load current feedback feature provides a proportional constant-current output suitable for monitoring by a MCU’s A/D input, which facilitates the design of closed-loop torque/speed control as well as open load detection

Features

Fully specified operation 5.0 V to 28 V

Limited operation with reduced performance up to 40 V

120 mΩ RDS(ON) typical H-Bridge MOSFETs

TTL/CMOS compatible inputs

PWM frequencies up to 10 kHz

Active current limiting (regulation)

Fault status reporting

Sleep mode with current draw ≤50 μA (inputs floating or set to match default logic states)

Polarity control through two independent inputs

Exhibit high-impedance through two disable inputs