A4941
A4941 is Three-Phase Sensorless Fan Driver manufactured by Allegro MicroSystems.
A4941 Three-Phase Sensorless Fan Driver
Features
AND BENEFITS
- Sensorless (no Hall sensors required)
- Soft switching for reduced audible noise
- Minimal external ponents
- PWM speed input
- FG speed output
- Low power standby mode
- Lock detection
- Optional overcurrent protection
- Variant A automotive qualified to AEC-Q100 Grade 2
PACKAGE:
16-pin TSSOP with exposed thermal pad (suffix LP)
DESCRIPTION
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...
