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产品 预告(展)
特性
产品
描述
bq20z80
SLUS625–SEPTEMBER2004
sbs1.1-compliantgasgaugeenabledwithimpedancetrack™technology
FORUSEWITHTHEbq29312
•
OptionalPulseChargingFeatureforImproved
ChargeTimes
•
UsesImpedanceTrackTechnologytoProvide
AccurateMeasurementofAvailableChargein
•
drives3-,4-or5-segmentleddisplayfor
li-ionandli-polymerbatteriesremainingcapacityindication
•
Betterthan1%ErrorOverLifetimeofthe
•
38ltssop(dbt)
电池
•
InstantAccuracy–NoLearningCycle
•
NotebookPCs
必需的
•
MedicalandTestEquipment
•
SupportstheSmartBatterySpecificationSBS
•
PortableInstrumentation
v1.1
•
可擦可编程只读存储器
•
WorksWiththeTIbq29312AnalogFrontEnd
(afe)protectionictoprovidecompletepack
ElectronicsSolution
•
fullarrayofprogrammablevoltage,电流,
thebq20z80sbs-compliantgasgaugeicincorpor-
andTemperatureProtectionFeatures
atingImpedanceTracktechnologyisdesignedfor
batterypackorin-systeminstallation.thebq20z80
•
IntegratedTimeBaseRemovesNeedfor
measuresandmaintainsanaccuraterecordofavail-
ExternalCrystalwithOptionalCrystalInput
ablechargeinli-ionorli-polymerbatteriesusingits
•
electronicsfor7.2-v,10.8-vor14.4-vbattery
integratedhigh-performanceanalogperipherals.这
PacksWithFewExternalComponents
bq20z80monitorscapacitychange,batteryim-
pedance,opencircuitvoltage,andothercritical
•
basedonapowerfullow-powerrisccpu
parametersofthebatterypackandreportsthe
corewithhigh-performanceperipherals
informationtothesystemhostcontrolleroveraserial
•
IntegratedFieldProgrammableFLASH
communicationbus.itisdesignedtoworkwiththe
MemoryEliminatestheNeedforExternal
bq29312analogfront-终止(afe)protectionicto
配置
maximizefunctionalityandsafetyandminimize
•
MeasuresChargeFlowUsinga
componentcountandcostinsmartbatterycircuits.
高-决议,16-bitintegratingconverter
thesuperiorimpedancetracktechnologygas-gaug-
–betterthan0.65-nvhofresolution
ingaccuracyiscreatedbythecontinuousanalysisof
theimpedanceofthebattery.thisenablesremaining
–self-标定
capacitytobecalculatedwithdischargerate,tem-
–offseterrorlessthan1-
µ
V
perature,andcellagingallaccountedforduringeach
•
uses16-bitdeltasigmaconverterfor
stageofeverycycle.
AccurateVoltageandTemperature
度量
•
ExtensiveDataReportingOptionsFor
ImprovedSystemInteraction
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
impedancetrackisatrademarkoftexasinstruments.
productpreviewinformationconcernsproductsintheforma-
copyright©2004,texasinstrumentsincorporated
tiveordesignphaseofdevelopment.characteristicdataandother
specificationsaredesigngoals.texasinstrumentsreservesthe
righttochangeordiscontinuetheseproductswithoutnotice.
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