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A4988 Datasheet Dmos Microstepping Driver

Manufacturer: Allegro MicroSystems

Overview: A4988 DMOS Microstepping Driver with Translator and Overcurrent.

General Description

The A4988 is a plete microstepping motor driver with built-in translator for easy operation.

It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A.

The A4988 includes a fixed off-time current regulator which has the ability to operate in slow or mixed decay modes.

Key Features

  • Low Rds(on) outputs.
  • Automatic current decay mode detection/selection.
  • Mixed and slow current decay modes.
  • Synchronous rectification for low power dissipation.
  • Internal UVLO.
  • Crossover-current protection.
  • 3.3 and 5 V compatible logic supply.
  • Thermal shutdown circuitry.
  • Short-to-ground protection.
  • Shorted load protection.
  • Five selectable step modes: full, 1/2, 1/4, 1/8, and 1/16.

More Datasheets from Allegro MicroSystems

Part Number Description
A4980 Automotive Programmable Stepper Driver
A4982 DMOS Microstepping Driver
A4984 DMOS Microstepping Driver
A4985 DMOS Microstepping Driver
A4987 DMOS Dual Full-Bridge PWM Motor 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

A4988 Distributor