The RP604 from Ricoh Electronic Devices is a DC to DC Converter with Input Voltage 1.8 to 5.5 V, Output Voltage 1 1.6 to 5.2 V, Output Current 1 300 mA, Operating Temperature -40 to 125 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Surface Mount, Buck-Boost. More details for RP604 can be seen below.