UH255

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. 

规格书UH255