General Description
50mA boost converter in 5-lead SOT-89 package. Only 3 external components are needed to complete the switcher design, and frequency options of 50, 100, and 180kHz gives the designer the ability to trade off system needs with switcher design size.

Features
♦ 85% efficiency at 50mA
♦ Start-up voltages as low as 900mV
♦ ±2.5% accurate outputs
♦ Complete switcher design with only 3 external components
♦ 50, 100 and 180kHz switching frequency versions available
♦ Shutdown to 0.5µA
♦ External transistor option allows several hundred milliamp switcher design

Applications
♦ Cellular Phones, Pagers
♦ Portable Cameras and Video Recorders
♦ Palmtops and PDAs