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A3989

Part Number	A3989
Manufacturer	Allegro MicroSystems
Description	Bipolar Stepper and High Current DC Motor Driver
Published	May 2, 2007
Detailed Description	A3989 Bipolar Stepper and High Current DC Motor Driver Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ 36 V output rating ...
Datasheet	A3989 PDF File

Overview

A3989 Bipolar Stepper and High Current DC Motor Driver Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ 36 V output rating 2.
4 A dc motor driver 1.
2 A bipolar stepper driver Synchronous rectification Internal undervoltage lockout (UVLO) Thermal shutdown circuitry Crossover-current protection Very thin profile QFN package Description The A3989 is designed operate at voltages up to 36 V while driving one bipolar stepper motor, at currents up to 1.
2A, and one dc motor, at currents up to 2.
4 A.
The A3989 includes a fixed off-time pulse width modulation (PWM) regulator for current control.
The stepper motor driver features dual 2-bit nonlinear DACs (digital-to-analog converters) that enable control...

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