LEDs vs. CCFL

This application note describes and shows various application circuits to power white and blue LEDs using the MIC2142 and MIC2145. The MIC2142 is a micropower, boost-switching regulator housed in a SOT-23-5 package. The input voltage range is between 2.2V to 16V with an adjustable output voltage up to 22V. In addition, the 330kHz operation allows small surface mount external components to be used. The MIC2145 is an MSOP-8 boost-switching regulator with programmable peak switch current to allow the user to set the maximum efficiency to occur in the applications. The input voltage range for the MIC2145 is 2.4V to 16V with an adjustable output voltage up to 16V.