Part A5947-B
Description Three-Phase Sensorless Fan Driver
Manufacturer Allegro MicroSystems
Size 1.18 MB
Allegro MicroSystems
A5947-B

Overview

The A5947-B three phase motor driver IC incorporates sensorless sinusoidal drive to minimize vibration for a wide variety of fan applications. Sensorless control eliminates the requirement for Hall sensors.

  • AEC-Q100 qualified
  • Speed curve configuration via EEPROM
  • I2C serial port
  • Sinusoidal modulation for reduced audible noise and low vibration
  • Sensorless (no Hall sensors required)
  • Low RDS(ON) power MOSFETs
  • 3.3 V / 20 mA linear regulator
  • PWM or analog speed input
  • FG speed output
  • Slew rate control