The F0505XT-W2R3 from MORNSUN is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 5 V, Output Current 1 4 to 40 mA, Output Power 200 mW, Operating Temperature -40 to 105 Degree C. Tags: Through Hole, Buck-Boost. More details for F0505XT-W2R3 can be seen below.