Product category:
Drives, motors and power transmission, couplings, clutches
News Release from: Allegro MicroSystems Europe | Subject: Bidirectional DC motor driver IC
Edited by the Manufacturingtalk Editorial
Team on 09 October 2007
Low-voltage bidirectional DC motor
driver IC
A low-voltage bidirectional DC motor driver IC in an ultra-compact package measuring 2 mm square and 0.55 mm high, the A3903, has been launched by from Allegro MicroSystems Europe.
The new A3903 from Allegro MicroSystems Europe is a low-voltage bidirectional DC motor driver IC in an ultra-compact package measuring only 2 mm square and 0.55 mm high The new device has a typical input voltage range of 3 to 5.5 V and produces an output current up to 500 mA
This article was originally published on Manufacturingtalk on 16 Dec 2003 at 8.00am (UK)
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The output uses a full-bridge circuit incorporating source-side linear operation to produce a constant voltage across the motor coil.
This regulated output minimises motor voltage changes caused by current variations and battery voltage fluctuations.
Logic input pins are provided to control the motor rotation, brake, and standby (at less than 500 nA supply current) to allow optional pulse-width modulation of the sink drivers.
Internal circuitry includes thermal shutdown, undervoltage lockout and crossover current (shoot-through) protection.
Typical applications include robotic actuators and pumps, portable printers and scanners, camera lens and shutter controls, battery powered toys and games, and low-noise test instrumentation systems.
The A3903 is supplied in a 2 x 2 x 0.55 8-lead DFN package, with exposed thermal pad (suffix EE).
This small footprint package is lead (Pb) free, with 100% matt tin leadframe plating.
Operating temperature range is -40degC to 85degC.
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