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A3984 - DMOS Microstepping Driver

Datasheet Summary

Description

The A3984 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 an output drive capacity of up to 35 V and ±2 A.

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 and thermal shutdown circuitry.
  • Crossover-current protection.

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Datasheet preview – A3984

Datasheet Details

Part number A3984
Manufacturer Allegro MicroSystems
File Size 838.40 KB
Description DMOS Microstepping Driver
Datasheet download datasheet A3984 Datasheet
Additional preview pages of the A3984 datasheet.

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Full PDF Text Transcription

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A3984 DMOS Microstepping Driver with Translator FEATURES AND BENEFITS ▪ Low RDS(ON) outputs ▪ 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 A3984 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 an output drive capacity of up to 35 V and ±2 A. The A3984 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes.
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