UM1660DA - Union Semiconductor

UM1660DA Low Power DC/DC Boost Converter

The UM1660 is a PFM controlled step-up DC-DC converter with a switching frequency up to 1MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-Ion battery. The part can also be used to generate standard 3.3V/5V to 12V power conversions. With a high switching frequency.

Features

 LCD Bias Supply
 White LED Supply for LCD Backlights
 Digital Still Camera
 PDAs, Organizers and Handheld PCs
 Cellular Phones
 Standard 3.3V/5V to 12V Conversion
 2.0V to 6.0V Input Voltage Range
 Adjustable Output Voltage up to 28V
 400mA Internal Switch Current
 Up to 1MHz Switching Frequency
 36µA Typical No Load Quiescent Current
 1µA Maximum Shutdown Current
 Internal Soft-Start
 Available in Tiny SOT23-5 and DFN6 2.0×2.0 Packages Pin Configurations Top View (Top View) 54 M M SW 1 5 VIN PHO GND 2 FB 3 4 EN (Top View) VIN 1 GND 2 EN 3 6 SW 5 NC 4 FB 123 M: M.