The TSR 1-0525SM from Traco Power is a DC to DC Converter with Input Voltage 3.8 to 5.5 V, Output Voltage 1 2.5 V, Output Current 1 1 A, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Surface Mount, Buck/Step down. More details for TSR 1-0525SM can be seen below.