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A3987 Datasheet DMOS Microstepping Driver

Manufacturer: Allegro MicroSystems

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General Description

The A3987 is a complete microstepping motor driver with built-in translator for easy operation.

It is designed to operate bipolar stepper motors in full, half, quarter, and sixteenth step modes, with output drive capability of 50 V and ±1.5 A.

The A3987 includes a fixed off-time current regulator, which has the ability to operate in slow or mixed decay modes.

Overview

A3987 DMOS Microstepping Driver with Translator.

Key Features

  • Low RDS(on) outputs.
  • Short-to-ground protection.
  • Shorted load protection.
  • Automatic current decay mode detection/selection.
  • Mixed and slow current decay modes.
  • Synchronous rectification for low power dissipation.
  • Internal UVLO and thermal shutdown circuitry.
  • Crossover-current protection.

More Datasheets from Allegro MicroSystems

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