Drive White Light LED Circuit

Published:2011/4/26 Author:Joyce | Keyword: Drive, White Light, LED | From:SeekIC

Input voltage of MAX1913 ranges from 2.7V to 5.3 V. it could provide stable output voltage or output current to drive the white light LED. As shown in the graph is a MAX1913 Drive White Light LED circuit . It needs only four small ceramic capacitors to fully compose DC/DC regulator without inductance. Its unique design of charge pump can decrease the input ripple and maintain a stable 750kHz switching frequency in a wide load range. MAX1913 also includes logic level turnoff and soft start function to decrease insurge current when activated.The main features are as follows. (1) low input ripple, 750kHz working frequency.(2) current detection threshold of 200mV to reduce power consumption.(3) 60mA output current . 3% adjustable range of output compact.(4) 1μA shutoff current.(5) minute pin encapsulation .



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