The LTC3807 from Analog Devices is a DC to DC Converter with Input Voltage 4 to 38 V, Output Voltage 1 0.8 to 24 V, Output Current 1 25000 mA, Operating Temperature -55 to 150 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LTC3807 can be seen below.