The LTC3830-1 from Analog Devices is a DC to DC Converter with Input Voltage 3 to 8 V, Output Voltage 1 1.265 V, Output Current 1 20000 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for LTC3830-1 can be seen below.