The PEM1-S5-D5-S from CUI is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 5 V, Output Current 1 100 mA, Output Power 1000 mW, Output Voltage 2 -5 V. Tags: Surface Mount, Buck-Boost. More details for PEM1-S5-D5-S can be seen below.