Description

The YB1517 is a Current-mode PWM step-up DC-DC converter. It can drive up to 18V in 20mA output current conditions while Vin at 3.0V and 20V at 3.5Vin. The 900 KHz switching frequency allows it to work with tiny external components, therefore minimize the footprint and cost in space consideration products.

Features

■ 900KHz Current-mode PWM Converter

■ Built-in Internal Switch

■ Adjustable Output Voltage up to 20V

■ 2.7V to 16V Input Range

■ <1uA Shutdown Current

■ Internal Soft Start

■ Drives up to 6 White LEDs

■ Tiny Inductor and Capacitors Allowed

■ Over Voltage Protection 30V

■ Small 5-Lead SOT-23 Package

■ 220mV Low Reference Voltage

■ Green package (RoHS) available

Applications

■ LCD Display Module

■ White LED Backlighting

■ PDAs, GPS Terminals

■ Digital Cameras

■ Cellular Phone

■ Electronic Books

■ Portable Applications