A4949 driver equivalent, three phase sensorless sinusoidal fan driver.
* 180° sinusoidal drive for low audible noise
* High efficiency control algorithm
* Sensorless operation
* Analog Speed input (A4945)
* PWM Speed inpu.
Both packages are lead (Pb) free with 100% matte-tin leadframe plating.
8-pin SOICN
8-pin SOICN
with exposed thermal.
The A4945 and A4949 three phase motor drivers incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans.
A Speed input is provided to control motor speed. This allows system cost savings by eliminating an external var.
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