UM1665 - Union Semiconductor

UM1665 Low Power DC/DC Boost Converter

The UM1665 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

z LCD Bias Supply z White LED Supply for LCD Backlights z Digital Still Cameras z PDAs, Organizers and Handheld PCs z Cellular Phones z Standard 3.3V/5V to 12V Conversion z 2.0V to 6.0V Input Voltage Range z Adjustable Output Voltage up to 28V z 400mA Internal Switch Current z Up to 1MHz Switching Frequency z 36µA Typical No Load Quiescent Current z 1µA Maximum Shutdown Current z Internal Soft-Start z Available in Tiny SOT23-5 and Thin DFN6 3.0×3.0 with 0.60mm (TYP) Thickness Packages Pin Configurations Top View (Top View) M: Month Code UM1665S SOT23-5 XX: Week Code UM1665DA TDFN6 3.0×3.