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FEATURESDESCRIPTION
产品
TPS65020
SLVS607–SEPTEMBER2005
powermanagementicforli-ionpoweredsystems
•
1.2a,97%efficientstep-downconverterfor
TheTPS65020isanintegratedPowerManagement
systemvoltage(vdcdc1)
icforapplicationspoweredbyoneli-ionor
li-polymercell,andwhichrequiremultiplepower
•
1a,upto95%efficientstep-downconverter
围栏.thetps65020providesthreehighlyefficient,
formemoryvoltage(vdcdc2)
步伐-downconverterstargetedatprovidingthecore
•
800ma,90%efficientstep-downconverter
电压,附带的,i/oandmemoryrailsinapro-
forprocessorcore(vdcdc3)
cessorbasedsystem.allthreestep-downconverters
•
20maldo/switchforrealtimeclock
enteralow-powermodeatlightloadformaximum
efficiencyacrossthewidestpossiblerangeofload
(vrtc)
电流.thetps65020alsointegratestwo50ma
•
2
×
50mALDOforSRAMandPLL
ldovoltageregulators,whichareenabledwithan
•
DynamicVoltageManagementforProcessor
externalinputpin.eachldooperateswithaninput
核心
voltagerangebetween1.5vand6.5v,准许
themtobesuppliedfromoneofthestep-向下
•
ExternallyAdjustableResetDelayTime
convertersordirectlyfromthemainbattery.thetwo
•
BatteryBackupFunctionality
50-maldovoltageregulatorsareintendedforuse
•
SeparateEnablePinsforInductiveConverters
withtheSDRAMandPLLpowersupplyinaIntel
•
I
2
C™CompatibleSerialInterface
pxa270basedsystem.theserialinterfaceisused
fordynamicvoltagescalingofthecorevoltage,
•
85-
µ
AQuiescentCurrent
maskinginterrupts,orfordis/enablingandsettingthe
•
LowRipplePFMMode
ldooutputvoltages.theinterfaceiscompatiblewith
•
ThermalShutdownProtection
thefast/standardmodei
2
c™specification,准许
transfersatupto400khz.
•
pushbuttoni/o
TheTPS65020incorporatesapushbutton
debouncedinputandlatchedoutputforimplemen-
tationofapush-buttonturn-onfeature,典型地
•
PDA
requiredinsmartphonesorwirelesspdas.
•
cellular/smartphone
•
InternetAudioPlayer
•
DigitalStillCamera
•
DigitalRadioPlayer
•
SplitSupplyDSPand
µ
psolutions:
omap1610,omap1710,omap330
•
intelpxa270,等
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
I
2
cisatrademarkofphilipselectronics.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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