The MEF1S0305SPC from Murata is a DC to DC Converter with Input Voltage 3.135 to 3.465 V, Output Voltage 1 5 V, Output Current 1 200 mA, Output Power 1000 mW, Isolation Voltage 1000 V. Tags: Through Hole, Boost/Step Up. More details for MEF1S0305SPC can be seen below.