The XC9147 Series from Torex Semiconductor is a DC to DC Converter with Input Voltage 0.65 to 6 V, Output Voltage 1 1.8 to 5.5 V, Operating Temperature -40 to 105 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Surface Mount, Boost/Step Up. More details for XC9147 Series can be seen below.