The LFA28D from Pico Electronics is a DC to DC Converter with Input Voltage 18 to 36 V, Output Voltage 1 28 V, Output Current 1 0.13 to 1.34 A, Output Power 37500 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck-Boost. More details for LFA28D can be seen below.