The SPU03L-12 from Mean Well is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 25 to 250 mA, Output Power 3000 mW, Operating Temperature -40 to 90 Degree C. Tags: Through Hole, Boost/Step Up. More details for SPU03L-12 can be seen below.