The MAX77231 from Analog Devices is a DC to DC Converter with Input Voltage 2.7 to 4.8 V, Output Voltage 1 11.2 to 16.2 V, Output Current 1 10 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Wafer-level Packaging, Buck/Step down. More details for MAX77231 can be seen below.