The MAXM17633 from Analog Devices is a DC to DC Converter with Input Voltage 4.5 to 36 V, Output Voltage 1 3.3 V, Output Current 1 2000 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Buck/Step down. More details for MAXM17633 can be seen below.