The MAX20012B from Analog Devices is a DC to DC Converter with Input Voltage 3 to 5.5 V, Output Voltage 1 0.5 to 1.5875 V, Output Current 1 12000 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for MAX20012B can be seen below.