The PE23108 from pSemi is a DC to DC Converter with Input Voltage 4.5 to 15 V, Output Voltage 1 18 to 42 V, Output Current 1 33 mA, Output Power 6 W, Operating Temperature -40 to 125 Degree C. Tags: Wafer-level Packaging, Boost/Step Up. More details for PE23108 can be seen below.