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TPS65012
SLVS504A–MARCH2004–REVISEDJANUARY2005
POWERANDBATTERYMANAGEMENTIC
forli-ionpoweredsystems
•
linearchargermanagementforsingleli-ion
TheTPS65012isanintegratedpowerandbattery
orli-polymercells
managementICforapplicationspoweredbyone
li-ionorli-polymercellandwhichrequiremultiple
•
DualInputPortsforChargingFromUSBor
powerrails.thetps65012providestwohighly
fromwallplug,handles100-毫安/500-毫安
效率高的,步伐-downconverterstargetedatproviding
USBRequirements
thecorevoltageandperipheral,i/orailsinapro-
•
ChargeCurrentProgrammableviaExternal
cessor-basedsystem.bothstep-downconvertersen-
电阻
teralowpowermodeatlightloadformaximum
efficiencyacrossthewidestpossiblerangeofload
•
1-一个,95%efficientstep-downconverterfor
电流.thelow_pwrpinallowsthecorecon-
i/oandperipheralcomponents(vmain)
vertertoloweritsoutputvoltagewhentheapplication
•
400-毫安,90%efficientstep-downconverter
processorgoesintodeepsleep.thetps65012also
forprocessorcore(vcore)
integratestwo200-maldovoltageregulators,这个
•
2x200-maldosfori/oandperipheral
areenabledviatheserialinterface.eachldo
组件,ldoenableviabus
operateswithaninputvoltagerangebetween1.8v
and6.5v,allowingthemtobesuppliedfromoneof
•
SerialInterfaceCompatibleWithI
2
c,支持
thestep-downconvertersordirectlyfromthebattery.
100-khz,400-khzoperation
TheTPS65012hasahighlyintegratedandflexible
•
低_pwrpintolowerordisableprocessor
li-ionlinearchargerandsystempowermanagement.
CoreSupplyVoltageinDeepSleepMode
itoffersintegratedusb-portandac-adaptersupply
•
70-µaquiescentcurrent
managementwithautonomouspower-sourceselec-
•
1%ReferenceVoltage
tion,powerfetandcurrentsensor,highaccuracy
currentandvoltageregulation,chargestatus,和
•
ThermalShutdownProtection
chargetermination.
TheTPS65012chargerautomaticallyselectsthe
•
allsingleli-ioncell-operatedproducts
USBportortheacadapterasthepowersourcefor
requiringmultiplesuppliesincluding:
thesystem.intheusbconfiguration,thehostcan
increasethechargecurrentfromthedefaultvalueof
–PDA
maximum100mato500maviatheinterface.inthe
–cellular/smartphone
交流-adapterconfiguration,anexternalresistorsetsthe
–InternetAudioPlayer
maximumvalueofchargecurrent.
–DigitalStillCamera
thebatteryischargedinthreephases:conditioning,
•
DigitalRadioPlayer
constantcurrent,andconstantvoltage.chargeis
•
SplitSupplyDSPandµPSolutions
normallyterminatedbasedonminimumcurrent.一个
internalchargetimerprovidesasafetybackupfor
chargetermination.thetps65012automatically
restartsthechargeifthebatteryvoltagefallsbelow
aninternalthreshold.thechargerautomaticallyen-
terssleepmodewhenbothsuppliesareremoved.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
I
2
cisatrademarkofphillips.
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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