DMOS Microstepping Driver with Integrated Translator and Selectable Step Modes

A4984

Product Image

The A4984 simplifies microstepping motor control with its integrated translator and selectable step modes, offering automatic current decay selection and synchronous rectification for optimized performance.

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Top Features

Packaging

  • Low RDS(ON) outputs
  • Automatic current decay mode detection/selection
  • Mixed and Slow current decay modes
  • Synchronous rectification for low power dissipation
  • Internal UVLO
  • Crossover-current protection
  • 3.3 and 5 V compatible logic supply
  • Thin profile QFN and TSSOP packages
  • Thermal shutdown circuitry
  • Short-to-ground protection
  • Shorted load protection
  • Low current Sleep mode, <10 µA
  • No smoke no fire (NSNF) compliance (ET package)

The A4984 is supplied in three surface mount packages: two QFN packages, the 4 mm × 4 mm, 0.75 mm nominal overall height ES package, and the 5 mm × 5 mm  × 0.90 mm ET package. The LP package is a 24-pin TSSOP. All three packages have exposed pads for enhanced thermal dissipation, and are lead (Pb) free (suffix –T), with 100% matte tin plated leadframes.

 

Part Number Specifications and Availability