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A3964 Datasheet Dual Full-Bridge PWM Motor Driver

Manufacturer: Allegro MicroSystems

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General Description

Designed for pulse width modulated (PWM) current control of bipolar stepper motors, the A3964 is capable of continuous output currents to ±800 mA and operating voltages to 30 V.

Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value.

An internal precision voltage reference is provided to improve motor peak-current control accuracy.

Overview

A3964 Dual Full-Bridge PWM Motor Driver.

Key Features

  • ±800 mA continuous output current rating.
  • 30 V output voltage rating.
  • Internal PWM current control, saturated sink drivers.
  • Internally generated, precision 2.5 V reference.
  • Internal transient-suppression diodes.
  • Internal thermal-shutdown circuitry.
  • Crossover-current protection, UVLO protection Package: 20 pin SOIC (suffix LB) Not to scale.

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