The LTC1753 from Analog Devices is a DC to DC Converter with Input Voltage 4.7 to 12 V, Output Voltage 1 1.3 to 3.5 V, Output Current 1 20000 mA, Operating Temperature 0 to 70 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LTC1753 can be seen below.