CHIP CP2167
The CP2167 is an integrated solution for 4 white LED supplies in backlighting color display applications and phone camera input supply. The device contains a self adapted charge pump white LED driver and dual channel low dropout linear regulators. The CP2167 is available in a small 20-pin 3mm*3mm QFN package.FEATURES
z z z z z z z z z z z z z z z supply voltage ranging from 2.7 V to 5.5 V Over-current, over-temperature and short protection Anti reverse current 3mm*3mm QFN 20L Less than 0.1μA Quiescent Current In Shutdown Mode RoHS6 Compliant Drives up to 4 LEDs at 30 mA Each Regulated Output Current With 0.5% Matching Utilizing a 1x/1.5x adaptive fractional conversion technique for high efficiency (up to 92%) wire pulse counting dimming : 16 steps logarithm scale Low Input Ripple and Low EMI 1 MHz operating frequency 1-wire pulse counting technique Low dropout voltage at 200mA load current: 200mV High output voltage accuracy: ±1.5% Copyright ©2008 Chiphomer Technology Limited 1 Charge Pump Section LDO Section Product Brief CP2167 V1.0 LED Driver Series High Efficiency 1X/1.5X Fractional Charge Pump for White LED (1-Wire Pulse Counting Dimming Control) With Dual Channel 200mA LDO z High power z z z z z z supply rejection ratio: 68dB@1kHz Low output noise: 150µVrms Low quiescent current: 72µ...