The TDR 2-0511SM from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 9 V, Output Voltage 1 5 V, Output Current 1 0.4 A, Output Power 2 W, Isolation Voltage 1.6 kV. Tags: Surface Mount, Buck-Boost. More details for TDR 2-0511SM can be seen below.