A4941 Datasheet - Allegro Micro Systems

A4941 Three-Phase Sensorless Fan Driver

The A4941 three-phase motor driver incorporates BEMF sensing to eliminate the requirement for Hall sensors in fan applications. A pulse wave modulated (PWM) input is provided to control motor speed, allowing system cost savings by eliminating external variable power supply. PWM input can also be use.

A4941 Features

* Sensorless (no Hall sensors required)

* Soft switching for reduced audible noise

* Minimal external components

* PWM speed input

* FG speed output

* Low power standby mode

* Lock detection

* Optional overcurrent protection

* V

A4941-AllegroMicroSystems.pdf

A4941 Datasheet Preview — Preview of A4941 PDF

Datasheet Details

Part number:

A4941

Manufacturer:

Allegro Micro Systems

File Size:

665.21 KB

Description:

Three-phase sensorless fan driver.

A4941 Distributor

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TAGS

A4941 A4941 Three-Phase Sensorless Fan Driver Allegro Micro Systems