UM1666

UM1666 Low Power DC/DC Boost Converter UM1666S SOT23-5 UM1666DA DFN6L 2.0×2.0 General Description The UM1666 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 of 1MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. The UM1666 has an internal 600mA switch current limit, offering lower output voltage ripple. The low quiescent current (typically 36µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range. Applications Features z LCD Bias Supply z White LED Supply for LCD Backlights z Digital Still Camera z PDAs, Organizers and Handheld PCs z ...