Microstepping Programmable Stepper Motor Driver with Stall Detect and Diagnostics

A4979

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The A4979 is a highly configurable stepper motor driver with integrated microstepping, stall detection, and short circuit protection.

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Top Features

Packaging

  • Typical application up to 1.5 A, 50 V
  • Stall detect features
  • Low RDS(on) outputs, 0.5 Ω source and sink, typical
  • Automatic current decay mode detection/selection
  • Mixed, Fast, and Slow current decay modes
  • Synchronous rectification for low power dissipation
  • Internal UVLO and Thermal Shutdown circuitry
  • Crossover-current protection
  • Short circuit and open load diagnostics
  • Hot and cold thermal warning
  • SPI-compatible or simple Step and Direction motion control
  • Highly configurable via SPI-compatible serial interface
28-pin TSSOP with exposed thermal pad (suffix LP)

Part Number Specifications and Availability