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FEATURESAPPLICATIONS
DESCRIPTION
bq27000,bq27200
SLUS556D–SEPTEMBER2004–REVISEDMARCH2006
SINGLECELLLi-IonANDLi-PolBATTERYGASGAUGEICFORPORTABLE
APPLICATIONS(bqJUNIOR)
•PDA
•HDQ(bq27000)orI
2
C(bq27200)
Communication
•SmartPhones
•MP3Players
•ReportsAccurateTime-to-EmptyWith
MeasuredLoadandHistoricalMaximumand
•DigitalCameras
StandbyLoads
•InternetAppliances
•ReportsTemperature,Voltage,andCurrent
•HandheldDevices
•HighAccuracyChargeandDischargeCurrent
IntegrationwithAutomaticOffsetCalibration
•RequiresNoUserCalibration
ThebqJUNIOR™seriesarehighlyaccurate
stand-alonesingle-cellLi-IonandLi-Polbattery
•ProgrammableInput/OutputPort
capacitymonitoringandreportingdevicestargetedat
•InternalUserEEPROMConfigurationMemory
space-limited,portableapplications.TheICmonitors
•AutomaticCapacityReductionWithAge
avoltagedropacrossasmallcurrentsenseresistor
connectedinserieswiththebatterytodetermine
•StableOscillatorWithoutExternal
chargeanddischargeactivityofthebattery.
Components
Compensationsforbatterytemperature,
•DynamicEnd-of-DischargeDetectionDelayto
self-discharge,anddischargerateareappliedtothe
AllowUseinaHigh-DynamicLoad
capacitymeasurmentstoprovideavailable
Environment
time-to-emptyinformationacrossawiderangeof
•AutomaticSleepModeWhenCommunicationoperatingconditions.Batterycapacityisautomatically
recalibrated,orlearned,inthecourseofadischarge
LinesareLow
cyclefromfulltoempty.Internalregistersinclude
•AvailableinaSmall3mmx4mmQFN
current,capacity,time-to-empty,state-of-charge,cell
Package
temperatureandvoltage,status,andmore.
•FiveLow-PowerOperatingModes
ThebqJUNIORcanoperatedirectlyfromsingle-cell
–Active:<90µA
Li-IonandLi-Polbatteriesandcommunicatestothe
–Sleep:<2.5µA
systemoveraHDQone-wireorI
2
Cserialinterface.
–Ship:<2µA(bq27000only)
–Hibernate:<1.5µA
–DataRetention:<20nA
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bqJUNIORisatrademarkofTexasInstruments.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2004–2006,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Not Recommended For New Designs
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