High Efficiency Low Noise PFM Step-Up DC/DC Converter
Description
UM1661
High Efficiency Low Noise PFM Step-Up DC/DC Converter UM1661 SOT23-6
General Description
The UM1661 PFM step-up DC/DC Converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform b...