MA1576Y Charge - pump Driven Two Groups of LED Circuit

Published:2011/6/19 6:37:00 Author:Michel | Keyword: Charge - pump, Driven , Two Groups, LED Circuit | From:SeekIC

The MA1576Y charge - pump driven drive white LED Circuit is showed as above.This circuit can use 480mA general current to drivr two groups of white LED(every group has 4 white LED).For the flashing white LED group, this circuit allows each white LED current to reach 100 mA.Each group of white LED has independent the current set, pulse brightness modulation and two lines brightness control.Using the adaptive switch, in the whole process of discharging of a single lithium ion battery, circuit average efficiency can reach 83% .For the digital camera which uses white LED,it's an ideal choice to choose white LED drive circuit composed of MAX1576Y. MA1576Y Charge - pump Driven Two Groups of LED Circuit Picture:



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