A4942 driver equivalent, three-phase sensorless fan driver.
* Sensorless (no Hall sensors required)
* Closed loop speed control
* Minimal external components
* PWM speed input
* FG speed output
* Lock detec.
A closed loop speed control system is integrated into the IC. This allows accurate setting of maximum and minimum speed.
TheA4942 three phase motor driver incorporates BEMF sensing to eliminate the requirement for Hall sensors in fan applications.
A closed loop speed control system is integrated into the IC. This allows accurate setting of maximum and minimum speeds vi.
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