The LTC3335 from Analog Devices is a DC to DC Converter with Input Voltage 1.8 to 5.5 V, Output Voltage 1 1.8 to 5 V, Output Current 1 50 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck-Boost. More details for LTC3335 can be seen below.