The VTX-224-053-0511 from Vigortronix is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 5 V, Output Current 1 20 to 200 mA, Output Power 500 mW, Isolation Voltage 3000 V. Tags: Surface Mount, Buck-Boost. More details for VTX-224-053-0511 can be seen below.