The LTC1708-PG from Analog Devices is a DC to DC Converter with Input Voltage 4 to 36 V, Output Voltage 1 0.9 V, Output Current 1 25000 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LTC1708-PG can be seen below.