www.德州仪器.com
FEATURESAPPLICATIONS
描述
bq27000,bq27200
SLUS556B–SEPTEMBER2004–REVISEDNOVEMBER2004
singlecellli-ionandli-polbatterygasgaugeicforportable
产品(bqjunior™)
•
PDA
•
hdq(bq27000)ori
2
c(bq27200)
交流
•
SmartPhones
•
MP3Players
•
ReportsAccurate
时间-至-empty
和
MeasuredLoadandHistoricalMaximumand
•
DigitalCameras
StandbyLoads
•
InternetAppliances
•
reportstemperature,电压,andcurrent
•
HandheldDevices
•
HighAccuracyChargeandDischargeCurrent
IntegrationwithAutomaticOffsetCalibration
•
RequiresNoUserCalibration
ThebqJUNIORseriesarehighlyaccurate
保卫-alonesingle-cellli-ionandli-polbatteryca-
•
programmableinput/outputport
pacitymonitoringandreportingdevicestargetedat
•
InternalUserEEPROMConfigurationMemory
空间-限制,portableapplications.theicmonitors
•
AutomaticCapacityReductionWithAge
avoltagedropacrossasmallcurrentsenseresistor
connectedinserieswiththebatterytodetermine
•
StableOscillatorWithoutExternal
chargeanddischargeactivityofthebattery.compen-
组件
sationsforbatterytemperature,自-释放,和
•
dynamicend-的-dischargedetectiondelayto
dischargerateareappliedtothecapacity
allowuseinahigh-dynamicload
measurmentstoprovideavailabletime-至-emptyin-
环境
formationacrossawiderangeofoperatingcon-
•
AutomaticSleepModeWhenCommunication
ditions.batterycapacityisautomaticallyrecalibrated,
orlearned,inthecourseofadischargecyclefromfull
LinesareLow
toempty.internalregistersincludecurrent,capacity,
•
Small3mmx4mmQFNPackage
时间-至-empty,状态-的-承担,celltemperatureand
•
fivelow-poweroperatingmodes
电压,状态,andmore.
–active:<90µa
thebqjuniorcanoperatedirectlyfromsingle-cell
–sleep:<2.5µa
li-ionandli-polbatteriesandcommunicatestothe
systemoverahdqone-wireori
2
cserialinterface.
–ship:<2µa(bq27000only)
–hibernate:<1.5µa
–dataretention:<20na
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bqjuniorisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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