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A3988 Datasheet Quad DMOS Full Bridge PWM Motor Driver

Manufacturer: Allegro MicroSystems

Overview: A3988 Quad DMOS Full Bridge PWM Motor Driver.

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.

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.