Bipolar Stepper And High Current DC Motor Driver

The A3989 is designed operate at voltages up to 36 V while driving one bipolar stepper motor, at currents up to 1.2 A, 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 in full, half, and quarter steps. The dc motor is controlled using standard PHASE and ENABLE signals. Fast or slow current decay is selected via the MODE pin. The PWM current Regulator uses the Allegro patented mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation.
By Allegro MicroSystems, Inc.
A3989 's PackagesA3989 's pdf datasheet

A3989 Pinout, Pinouts
A3989 pinout,Pin out
This is one package pinout of A3989,If you need more pinouts please download A3989's pdf datasheet.

A3989 Application circuits
A3989 circuits
This is one application circuit of A3989,If you need more circuits,please download A3989's pdf datasheet.

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