A4949 Datasheet - Allegro

A4949 Three Phase Sensorless Sinusoidal Fan Driver

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 variable power supply. Alternatively, power supply mo.

A4949 Features

* 180° sinusoidal drive for low audible noise

* High efficiency control algorithm

* Sensorless operation

* Analog Speed input (A4945)

* PWM Speed input (A4949)

* Wide supply voltage range

* FG speed output

* Lock detection

* Ove

A4949 Datasheet (932.32 KB)

A4949 Datasheet Preview — Preview of A4949 PDF

Datasheet Details

Part number:

A4949

Manufacturer:

Allegro

File Size:

932.32 KB

Description:

Three phase sensorless sinusoidal fan driver.

📁 Related Datasheet

A4940 Automotive Full Bridge MOSFET Driver (Allegro Micro Systems)

A4941 Three-Phase Sensorless Fan Driver (Allegro Micro Systems)

A4942 Three-Phase Sensorless Fan Driver (Allegro)

A4945 Three Phase Sensorless Sinusoidal Fan Driver (Allegro)

A4900 High Voltage Three Phase Gate Driver (Allegro)

A4910 Automotive 3-Phase MOSFET Driver (Allegro)

A4911-1 Automotive Three-Phase MOSFET Driver (Allegro)

A4911-1A Automotive Three-Phase MOSFET Driver (Allegro)

TAGS

A4949 Three Phase Sensorless Sinusoidal Fan Driver Allegro

A4949 Distributor