Allegro MicroSystems, Inc. Introduces a Fully Integrated DMOS Full-Bridge Motor Driver IC

Designed for Office Automation Applications

May 10, 2011

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Worcester, MA - Allegro MicroSystems, Inc. introduces a new fully integrated single full-bridge DMOS motor driver IC with over-current protection (OCP), internal adjustable pulse-width-modulation (PWM), and a fully integrated charge pump. Allegro’s A4950 is intended for use as a DC brush motor driver with continuous output currents up to 2.5 amperes. Two input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals.

Internal synchronous rectification provides lower power dissipation during PWM operation. Other internal circuit protection includes over-current protection (OCP), motor lead short-to-ground or short-to-supply protection, thermal shutdown with hysteresis, under-voltage monitoring of VBB, and crossover current protection.

The A4950 is targeted at the office automation, industrial and consumer markets. It is provided in an 8L SOICN package with exposed thermal pad (Suffix LJ) for enhanced thermal dissipation.



Allegro MicroSystems is redefining the future of power and sensing technologies. From green energy to advanced mobility and motion control systems, our team is passionate about developing intelligent solutions that move the world forward and give our customers a competitive edge. With global engineering, manufacturing and support, Allegro is a trusted partner to both large enterprises and regional market leaders worldwide. Visit www.allegromicro.com.


Editorial Contact:

Nicole Bump
Senior Manager, Marketing Communication
Tel: (603) 314-1586
nbump@allegromicro.com
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