The TMV 0509S from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 9 V, Output Current 1 0.11 A, Output Power 1 W, Isolation Voltage 3 kV. Tags: Through Hole, Boost/Step Up. More details for TMV 0509S can be seen below.