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