Thesynchronousbuckconverterprovidesahighefficiency output,typically90%,capableofprovidingupto500mA ofcontinuousoutputcurrentwhileswitchingat2.25MHz, allowingtheuseofsmallsurfacemountinductorsandcapacitors.Amode-selectpinallowsBurstModeoperation tobeenabledforhigherefficiencyatlightloadcurrents,or disabledforlowernoise,constantfrequencyoperation. The VLDO regulator provides a low noise, low voltage outputcapableofprovidingupto300mAofcontinuous outputcurrentusingonlya2.2Fceramiccapacitor.The inputsupplyvoltageoftheVLDOregulator(LVIN)may comefromthebuckregulatororaseparatesupply.