The VTX-224-051-0513 from Vigortronix is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 8.3 to 83 mA, Output Power 500 mW, Isolation Voltage 1000 V. Tags: Surface Mount, Boost/Step Up. More details for VTX-224-051-0513 can be seen below.