The TBA 1-0521HI from Traco Power is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 5 V, Output Current 1 0.1 A, Output Power 1 W, Output Voltage 2 -5 V. Tags: Through Hole, Buck-Boost. More details for TBA 1-0521HI can be seen below.