The MFU104 from Total Power International is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 1.5 to 84 mA, Output Power 1000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Boost/Step Up. More details for MFU104 can be seen below.