Microstepping DMOS Driver with 1/16-Step Resolution and Integrated Translator

A3979

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The A3979 offers precise and versatile microstepping control for bipolar stepper motors, featuring 1/16-step resolution, an integrated translator for simplified control, and selectable current decay modes for optimized performance.

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Top Features

Packaging

  • ±2.5 A, 35 V output rating
  • Low RDS(On) outputs: 0.28 Ω source, 0.22 Ω sink, typical
  • Automatic current decay mode detection/selection
  • 3.0 to 5.5 V logic supply voltage range
  • Slow, Fast or Mixed current decay modes
  • Home output
  • Synchronous rectification for low power dissipation
  • Internal UVLO and thermal shutdown circuitry
  • Crossover-current protection

The A3979 is supplied in a low-profile (maximum height ≤1.20 mm), 28-pin TSSOP with exposed thermal pad. The package is available in a lead (Pb) free version, with 100% matte tin leadframe plating.

Part Number Specifications and Availability

Documentation and Resources

Documentation

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