The VTX-224-053-1222 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 5.5 to 55 mA, Output Power 500 mW, Output Voltage 2 -9 V. Tags: Surface Mount, Buck/Step down. More details for VTX-224-053-1222 can be seen below.