MIC2142 Datasheet | Micrel Semiconductor

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/Ni Cad/Ni MH 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 330k Hz operation allows small surface mount external ponents 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 m A output for supplying low power bias voltages; it is also capable of providing the 80m A 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 .micrel.. - 2.2V to 16V input voltage - Up to 22V output voltage - 330k Hz 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 Typical Application 2.8V to 4.7V VIN 10CµIFN L1 33µH D1 +5V @60m A MIC2142 1 VCC SW 3 FB 4 5 EN GND 2 R2 365k R1...