DMOS Driver with Integrated Translator for Bipolar Stepper Motors

A3977

A3977 Package Image

The A3977 simplifies microstepping motor control with its integrated translator, eliminating the need for complex phase-sequence tables. Offers smooth, quiet operation with selectable current decay modes and synchronous rectification.

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Top Features

Packaging

  • ±2.5 A, 35 V output rating
  • Low rDS(ON) outputs, 0.45 Ω source, 0.36 Ω sink typical
  • Automatic current decay mode detection/selection
  • 3.0 to 5.5 V logic supply voltage range
  • Mixed, fast, and slow current decay modes
  • Home output
  • Synchronous rectification for low power dissipation
  • Internal UVLO and thermal-shutdown circuitry
  • Crossover-current protection

The A3977 is supplied in a thin (<1.2 mm) 28-pin TSSOP with exposed thermal pad (suffix LP). The A3977 is lead (Pb) free, with 100% matte tin leadframe plating.

Package:

Package LP, 28-Pin TSSOP
with exposed thermal pad

Part Number Specifications and Availability

Documentation and Resources

Documentation

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