DESCRIPTION
The UF2768 provides all the circuitry for sensor-less speed control of three-phase brushless DC motor. The Sine-wave Driver Method will be better low-noise. The controller functions include start-up circuit, back-EMF commutation control, Pulse Width Modulation (PWM) speed control, lock protection, and thermal shutdown circuit.
The UF2768 is suitable for both game machine and CPU cooler that need silent drivers.

FEATURES
* Three-Phase class sin wave driver method
* Three-Phase Full-Wave Sensor-Less Drive Method
* Adjustable Forced Commutation Frequency (for Start-up)
* Built-In External PWM Speed Control
* Built-In Quick Start Function
* FG (Rotation Speed Detection) Output
* Soft Switching Circuit (for Noise Reducing)
* Power Saving Function (PWM Duty Input is 0%)
* Built-In Lock Protection and Auto Restart Function
* Thermal Shutdown Circuit