Description
www.DataSheet4U.com 19-3688; Rev 2; 5/06 KIT ATION EVALU E L B A AVAIL 1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN General.
Features.
Powers Up to 8 LEDs Up to 30mA/LED Drive for Backlight Up to 400mA Total Drive for Flash.
Two Internal Low-Noise 200mA LDO.
Features
* Powers Up to 8 LEDs Up to 30mA/LED Drive for Backlight Up to 400mA Total Drive for Flash
* Two Internal Low-Noise 200mA LDOs
* 94% Max/85% Avg Efficiency (PLED/PBATT) over Li+ Battery Discharge
* 0.2% Typical LED Current Matching
* Adaptive 1x/1.5x/2x Mode S
Applications
* Camera Phones and Smartphones Backlighting and Flash PDAs, Digital Cameras, and Camcorders
Typical Operating Circuit
1µF INPUT 2.7V TO 5.5V 1µF OUTPUT UP TO 480mA 10µF MAX8631X/Y M1 M2 M3 M4 F1 F2 F3 F4 LDO1 LDO2 1µF SETM SETF REF 0.01µF 1µF CAMERA MODULE MAIN FLASH
Ordering Information
PART TEMP