Thesynchronousbuckconverterprovidesahighefficiency output,typically90%.Itcanprovideupto500mAofoutput currentwhileswitchingat2.25MHz,allowingtheuseof smallsurfacemountinductorsandcapacitors.AmodeselectpinallowsBurstModeoperationtobeenabledfor higherefficiencyatlightloadcurrents,ordisabledforlower noise,constantfrequencyoperation. The VLDO regulator provides a low noise, low voltage outputcapableofprovidingupto300mAofoutputcurrent usingonlya2.2Fceramiccapacitor.Theinputsupply voltageoftheVLDOregulator(LVIN)maycomefromthe buckregulatoroutputoraseparatesupply.