The LTC3731H from Analog Devices is a DC to DC Converter with Input Voltage 4 to 36 V, Output Voltage 1 0.6 to 6 V, Output Current 1 60000 mA, Operating Temperature -40 to 140 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LTC3731H can be seen below.