NCP5890设计的多个LED灯电路图

NCP5890设计的多个LED灯电路图：This example shows how to provide advanced LCD backlighting control through the use of the NOA1302

ambient light sensor and the NCP5890 LED driver. 

 

Portable LCD Backlight Control via Ambient Light Sensor 

 

This implementation provides: 

* I C interface 

*  Gradual dimming control 

* >90% efficiency 

*  ±1% LED current accuracy 

*  30 V maximum string voltage 

*  3 segment PWM control 

*  1.3 MHz operation