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A3987 - DMOS Microstepping Driver

Datasheet Summary

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.

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.

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Datasheet preview – A3987

Datasheet Details

Part number A3987
Manufacturer Allegro MicroSystems
File Size 1.00 MB
Description DMOS Microstepping Driver
Datasheet download datasheet A3987 Datasheet
Additional preview pages of the A3987 datasheet.

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Full PDF Text Transcription

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A3987 DMOS Microstepping Driver with Translator FEATURES AND BENEFITS ▪ 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 PACKAGE: 24-pin TSSOP with exposed thermal pad (suffix LP) Not to scale 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.
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