The VTX-224-053-1212 from Vigortronix is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 9 V, Output Current 1 11 to 111 mA, Output Power 500 mW, Isolation Voltage 3000 V. Tags: Surface Mount, Buck/Step down. More details for VTX-224-053-1212 can be seen below.