RT9363

RT9363 Smallest 60mA 3-Channel Charge Pump White LED Driver with Low Dropout Current Source General Description The RT9363 is a high efficiency and cost effective charge pump white LED driver. It supports up to 3 white LEDs with regulated constant current for uniform intensity. The RT9363 maintains the highest efficiency by utilizing a x1/x2 charge pump and low dropout current regulators. User can easily configure each LED current up to 20mA by a pulse dimming control. The dimming of white LEDs current can be achieved by applying a pulse signal to the EN pin. There are totally 16 steps of current could be set by users. The operating voltage range is 2.8V to 5.0V. Internal soft start circuitry effectively reduces the inrush current while both start-up and mode transition. RT9363 also provides comprehensive protections such as short circuit protection. The load is disconnected from VIN while shutdown and the shutdown current is less than 10μA. RT9363 is available in a TSOT-23-8 package (1.0mm max height). Features z z z z z z z z z z z z Very High Efficiency Over 80% of Battery Life Support up to 3 White LEDs Support up to 60mA Output Current 1% Typical LED Current Matching Soft Start Function Short Circuit Protection Function Auto Charge Pump Mode Selection 250kHz Fixed Frequency Oscillator Output Over Voltage Protection 16-Step Brightness Control Low Input Noise and EMI RoHS Compliant and 100% Lead (Pb)-Free Applications z z z Mobile Phone, DSC, MP3 White LED Backlighting...