The PQM1-S5-S9-M from CUI is a DC to DC Converter with Input Voltage 4.75 to 5.25 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 PQM1-S5-S9-M can be seen below.