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 input can also be used as an on/off switch to disable motor operation and place the IC into a low power standby mode.

FEATUREs and Benefits
• 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
• Variant A automotive qualified to AEC-Q100 Grade 2