A4941 Three-Phase Sensorless Fan Driver

Allegro Micro Systems

Description

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.

📥 Download Datasheet

A4941 Datasheet Preview — Preview of A4941 PDF

Datasheet Specifications

Part number: A4941
Manufacturer: Allegro Micro Systems
File Size: 665.21 KB
Datasheet: A4941-AllegroMicroSystems.pdf
Description: Three-Phase Sensorless Fan Driver

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

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 used as an on/off switch to disable motor operation and place the IC into a low power standby mode. The A4941 is provided in a 16-

A4941 Distributors

📁 Related Datasheet

A4942 A4945 A4949 A4900 A4910 A4911-1

📌 All Tags

A4941 Three-Phase Sensorless Fan Driver Allegro Micro Systems

Allegro Micro Systems A4941-like datasheet

A4940