The YM05S05-G from Bel Fuse is a DC to DC Converter with Input Voltage 3.5 to 5 V, Output Voltage 1 0.7525 to 3.63 V, Output Current 1 5000 mA, Output Power 18000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck-Boost. More details for YM05S05-G can be seen below.