The SP6654 from MaxLinear is a DC to DC Converter with Input Voltage 2.7 to 5.5 V, Output Voltage 1 0.8 to 5 V, Output Current 1 0.8 A, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for SP6654 can be seen below.