The PDS1-S5-S9-D from CUI is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 9 V, Output Current 1 111 mA, Output Power 1000 mW, Isolation Voltage 1500 VDC. Tags: Through Hole, Boost/Step Up. More details for PDS1-S5-S9-D can be seen below.