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A3988 Datasheet Quad DMOS Full Bridge PWM Motor Driver

Manufacturer: Allegro MicroSystems

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General Description

The A3988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors.

Each full-bridge output is rated up to 1.2 A and 36 V.

The A3988 includes fixed off-time pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and DC motors in forward, reverse, and coast modes.

Overview

A3988 Quad DMOS Full Bridge PWM Motor Driver.

Key Features

  • 36 V output rating.
  • 4 full bridges.
  • Dual stepper motor driver.
  • High current outputs.
  • 3.3 and 5 V compatible logic supply.
  • Synchronous rectification.
  • Internal undervoltage lockout (UVLO).
  • Thermal shutdown circuitry.
  • Crossover-current protection.
  • Low profile QFN package.

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