MIC2142

MIC2142 Micropower Boost Converter General Description Features The MIC2142 is a micropower boost switching regulator housed in a SOT23-5 package. The input voltage range is between 2.2V to 16V, making the device suitable for onecell Li Ion and 3 to 4-cell alkaline/NiCad/NiMH applications. The output voltage of the MIC2142 can be adjusted up to 22V. The MIC2142 is well suited for portable, space-sensitive applications. It features a low quiescent current of 85µA, and a typical shutdown current of 0.1µA. It’s 330kHz operation allows small surface mount external components to be used. The MIC2142 is capable of efficiencies over 85% in a small board area. The MIC2142 can be configured to efficiently power a variety of loads. It is capable of providing a few mA output for supplying low power bias voltages; it is also capable of providing the 80mA needed to drive 4 white LEDs. The MIC2142 is available in a SOT23-5 package with an ambient operating temperature range from –40°C to +85°C. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. 2.2V to 16V input voltage Up to 22V output voltage 330kHz switching frequency 0.1µA shutdown current 85µA quiescent current Implements low-power boost, SEPIC, or flyback SOT23-5 package Applications LCD bias supply White LED driver 12V Flash memory supply Local 3V to 5V conversion __________________________________________________________________________________________________________...