The PESE1-S5-S12-M from CUI is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 84 mA, Output Power 1000 mW, Isolation Voltage 3000 VDC. Tags: Surface Mount, Boost/Step Up. More details for PESE1-S5-S12-M can be seen below.