The IB0509XT-W75R3 from MORNSUN is a DC to DC Converter with Input Voltage 4.75 to 5.25 V, Output Voltage 1 9 V, Output Current 1 9 to 83 mA, Output Power 750 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Boost/Step Up. More details for IB0509XT-W75R3 can be seen below.