The LT3763 from Analog Devices is a DC to DC Converter with Input Voltage 6 to 60 V, Output Voltage 1 2 to 55 V, Output Current 1 20000 mA, Operating Temperature -40 to 150 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LT3763 can be seen below.