The LTC3773 from Analog Devices is a DC to DC Converter with Input Voltage 3.3 to 36 V, Output Voltage 1 0.6 V, Output Current 1 25000 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 125 Degree C. Tags: Surface Mount, Buck-Boost. More details for LTC3773 can be seen below.