The PDM1-S5-D9-S from CUI is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 9 V, Output Current 1 56 mA, Output Power 1000 mW, Output Voltage 2 -9 V. Tags: Surface Mount, Buck-Boost. More details for PDM1-S5-D9-S can be seen below.