Description

The YB1506 is a step-up(Boost) DC-DC converter; operate as current source to drive up to 5 white LEDs in series. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The low off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or other hand held equipment.

Features

 Internal switch

 Adjustable output voltage up to 22V

 2.2V to 6.5V input range

 0.1uA shutdown current

 Small 5-Lead SOT-23 package

 High efficiency

 Drives 5 white LEDs

 Over voltage protection

 

Applications

 LCD Display Module

 White LED Backlighting

 PDAs

 Digital Cameras

 Portable Application

 Cellular Phone

 Electronic books