The MRF28S from Pico Electronics is a DC to DC Converter with Input Voltage 8 to 24 V, Output Voltage 1 28 V, Output Current 1 0.01 to 0.07 A, Output Power 2000 mW, Operating Temperature -55 to 85 Degree C. Tags: Through Hole, Boost/Step Up. More details for MRF28S can be seen below.