Three Phase Sensorless Sinusoidal Fan Driver

A4945, A4949

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Description

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The A4945 and A4949 three phase motor drivers incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans.

These devices are available in both automotive and commercial grade.

  • 180° sinusoidal drive - low audible noise and vibration
  • Motor position using Allegro's sensorless algorithm - eliminates external Hall sensors
  • AEC-Q100 Qualified - suitable for automotive applications

8-pin SOICN with exposed thermal pad (LJ package)

8-pin SOICN (L package)


Part Number Specifications and Availability