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A4987 Datasheet Dmos Dual Full-bridge Pwm Motor Driver

Manufacturer: Allegro MicroSystems

Overview: A4987 DMOS Dual Full-Bridge PWM Motor Driver with Overcurrent.

General Description

The A4987 is a dual DMOS full-bridge stepper motor driver with parallel input communication and overcurrent protection.

Each full-bridge output is rated up to 35 V and ±1 A.

The A4987 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.

Key Features

  • Low RDS(ON) outputs.
  • Internal mixed current decay mode.
  • Synchronous rectification for low power dissipation.
  • Internal UVLO.
  • Crossover-current protection.
  • 3.3 and 5 V compatible logic supply.
  • Thin profile QFN and TSSOP packages.
  • Thermal shutdown circuitry.
  • Short-to-ground protection.
  • Shorted load protection.
  • Low current Sleep mode, < 10 µA.

More Datasheets from Allegro MicroSystems

Part Number Description
A4980 Automotive Programmable Stepper Driver
A4982 DMOS Microstepping Driver
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A4985 DMOS Microstepping Driver
A4988 DMOS Microstepping Driver
A4989 Dual Full-Bridge MOSFET Driver
A4900 High Voltage Three Phase Gate Driver
A4910 Automotive 3-Phase MOSFET Driver
A4911-1 Automotive Three-Phase MOSFET Driver
A4911-1A Automotive Three-Phase MOSFET Driver

A4987 Distributor