Automotive Programmable Stepper Driver with SPI Control and Diagnostics

A3981

Product Image A3981-4980

The A3981 provides highly configurable and reliable stepper motor control for automotive applications. Features SPI control, programmable current regulation, and diagnostic capabilities for enhanced system performance.

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Top Features

Packaging

  • Peak motor current up to ±1.4 A, 28 V
  • 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 OVLO, UVLO, and Thermal Shutdown circuitry
  • Crossover-current protection
  • Short circuit and open load diagnostics
  • Hot and cold thermal warning
  • Stall detect features
  • SPI-compatible or simple Step and Direction motion control
  • Highly configurable via SPI-compatible serial interface

The A3981 is supplied in a 28-pin TSSOP power package with an exposed thermal pad (package type LP). This package is lead (Pb) free with 100% matte tin leadframe plating.

Part Number Specifications and Availability