The LTC3534 from Analog Devices is a DC to DC Converter with Input Voltage 2.4 to 7 V, Output Voltage 1 1.8 to 7 V, Output Current 1 500 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck-Boost. More details for LTC3534 can be seen below.