The MRF9S from Pico Electronics is a DC to DC Converter with Input Voltage 8 to 24 V, Output Voltage 1 9 V, Output Current 1 0.02 to 0.22 A, Output Power 2000 mW, Operating Temperature -55 to 85 Degree C. Tags: Through Hole, Buck-Boost. More details for MRF9S can be seen below.