DESCRIPTION 

The  UH255 is a single coil motor driver with integrated Hall

sensor.Lock-shutdown and auto-restart function protects the motor

from being over-heated and restarts the motor after being locked.

The rotation speed function is also integrated in the UH255, the

system could detect the rotation speed of motor when using

UH255 by the ‘FG’ pin.

The UH255 also uses Soft-switch phase-switching technique to

reduce the vibration and acoustic noise.

PWM is used for the speed control for  UH255.Two types of

PWM input signals could be used: voltage mode PWM & pulse

mode PWM.

FEATURES 

* Soft switching output driver.

* Built-in Hall sensor motor driver.

* Motor lock protection and automatic restart.

* Thermal shutdown protection.

* PWM speed control.