The PDM1-S3-S9-S from CUI is a DC to DC Converter with Input Voltage 2.97 to 3.63 V, Output Voltage 1 9 V, Output Current 1 111 mA, Output Power 1000 mW, Isolation Voltage 1500 VDC. Tags: Surface Mount, Boost/Step Up. More details for PDM1-S3-S9-S can be seen below.