Automotive Stepper Driver w/built-in translator

Featured Product from Allegro MicroSystems Inc.

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A4992: Automotive Stepper Driver

The A4992 is a flexible microstepping motor driver with integrated phase current control and a built-in translator for easy operation. It is a single chip solution designed to operate bipolar stepper motors in full, half, quarter, eighth, and sixteenth step modes, at up to 28 V. At power-on the A4992 is configured to drive most small stepper motors with simple step and direction inputs.

Top Features

  • 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 and open load diagnostics
  • Stall detect features
  • Configurable through serial interface

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