Automotive Microstepping Stepper Driver with SPI Control and Diagnostics

A4993

A4993 Product Image

The A4993 offers flexible and precise control of bipolar stepper motors, with integrated phase current control, a built-in translator for easy microstepping, and SPI control for advanced configuration and diagnostics.

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Top Features

Packaging

  • Peak motor current up to 1.4 A at 28 V.
  • Low RDS(ON) outputs, 0.5 Ω source and sink typical
  • Continuous operation at high ambient temperature
  • 3.5 to 50 V supply operation
  • Adaptive mixed current decay
  • Synchronous rectification for low power dissipation
  • Internal overvoltage and undervoltage lockout
  • Hot warning and overtemperature shutdown
  • Crossover-current protection
  • Short-circuit, open-load diagnostics
  • Stall-detect features
  • Configurable through serial interface.

Applications

  • Automotive stepper motors
  • Engine management
  • Headlamp positioning
  • HVAC flap and valve control
20-pin TSSOP with exposed thermal pad (suffix LP)

Part Number Specifications and Availability