The MAX77801 from Analog Devices is a DC to DC Converter with Input Voltage 2.3 to 5.5 V, Output Voltage 1 2.6 to 4.18 V, Output Current 1 2000 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Wafer-level Packaging, Buck/Step down. More details for MAX77801 can be seen below.