The XC9243 Series from Torex Semiconductor is a DC to DC Converter with Input Voltage 2.7 to 6 V, Output Voltage 1 0.9 to 6 V, Output Current 1 2000 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Surface Mount, Buck/Step down. More details for XC9243 Series can be seen below.