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DMOS Microstepping Driver with Integrated Translator, 1/16th Step Resolution, and Automatic Decay Selection

A4988

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The A4988 offers precise and versatile microstepping motor control, featuring a built-in translator, 1/16th step resolution, automatic current decay selection, and synchronous rectification.

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Top Features

Packaging

  • 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

The A4988 is supplied in a surface mount QFN package (ET), 5 mm × 5 mm, with a nominal overall package height of 0.90 mm and an exposed pad for enhanced thermal dissipation. It is lead (Pb) free (suffix –T), with 100% matte tin plated leadframes.

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Part Number Specifications and Availability

Documentation and Resources

Documentation

Third Party Design Tools

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All Types Guide
Documents Found: 32
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Guide
A4988 Evaluation Board User Guide
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Documents Found: 32
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Mikroe Stepper 2 Click
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Sparkfun Big Easy Driver
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Stepper Motor Driver Carriers for A4988