The VTX-224-053-0311 from Vigortronix is a DC to DC Converter with Input Voltage 3 to 3.6 V, Output Voltage 1 5 V, Output Current 1 20 to 200 mA, Output Power 500 mW, Isolation Voltage 3000 V. Tags: Surface Mount, Boost/Step Up. More details for VTX-224-053-0311 can be seen below.