The MAX1765 from Analog Devices is a DC to DC Converter with Input Voltage 1 to 5.5 V, Output Voltage 1 1.25 to 5 V, Output Current 1 800 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for MAX1765 can be seen below.