BQ2004E资料

Features

➤Fastnickelchargecadmiumandorconditioningnickel-metalofhydridebatteries➤HystereticcurrentregulationPWMswitch-modeorgatedcon-trolofanexternalregulator➤Easilyusedasintegratedastand-aloneintochargersystemsor➤Pre-chargeperatureandqualificationvoltageoftem-➤Configurable,displaybatterydirectandchargeLEDoutputsstatus➤Fast-chargeterminationby∆tem-perature/∆time,peakvolumede-tection,-∆V,maximumvoltage,maximumtemperature,andmaxi-mumtime➤Optionalpulsedcurrenttop-offmaintenancechargeandcharging➤Logic-levelcontrolledlow-powermode(<5µAstandbycurrent)

Pin ConnectionsDCMD116INHDSEL215DISVSEL314MODTM14 13VCC TM2512VSSTCO611LED2TS710LED1BATSNS16-Pin Narrow DIPor Narrow SOICPN2004E01.eps 6/99 E

bq2004E/HFast-ChargeICsGeneral Description

tureandvoltagearewithinconfig-uredlimits.

Thebq2004Eandbq2004HFastChargeICsprovidecomprehensiveTemperature,voltage,andtimearefastchargecontrolfunctionstogethermonitoredthroughoutfastcharge.withhigh-speedswitchingpowercon-FastchargeisterminatedbyanyoftrolcircuitryonamonolithicCMOSthefollowing:

device.

n

RateIntegrationofclosed-loopcurrent(∆T/∆oft)

temperaturerisecontrolcircuitryallowsthebq2004nPeakvoltagedetection(PVD)tobethebasisofacost-effectiveso-lutionforstand-aloneandsystem-nNegativedeltavoltage(-∆V)integratedchargersforbatteriesofoneormorecells.

nMaximumvoltageSwitch-activateddischarge-before-nMaximumtemperaturechargeallowsbq2004E/H-basedcharg-n

Maximumtime

erstosupportbatteryconditioningandcapacitydetermination.

Afterfastcharge,optionaltop-offandpulsedcurrentmaintenanceHigh-efficiencypowerconversionisphaseswithappropriatedisplayaccomplishedusingthebq2004E/Hasmodeselectionsareavailable.ahystereticPWMcontrollerforswitch-moderegulationofthecharg-Thebq2004Hdiffersfromtheingcurrent.Thebq2004E/Hmayal-bq2004Eonlyinthatfastcharge,ternativelybeusedtogateanexter-hold-off,andtop-offtimeunitshavenallyregulatedchargingcurrent.beenscaledupbyafactoroftwo,andthebq2004HprovidesdifferentFastchargemaybeginonapplicationdisplayselections.Timingdiffer-ofthechargingsupply,replacementencesbetweenthetwoICsareillus-ofthebattery,orswitchdepression.tratedinTable1.Displaydiffer-Forsafety,fastchargeisinhibitedencesareshowninTable2.

unless/untilthebatterytempera-

Pin Names

DCMDDischarge commandSNSSense resistor inputDSELDisplay selectLED1Charge status output 1VSELVoltage terminationLED2Charge status output 2select

VSSSystem groundTM1Timer mode select 1VCC5.0V±10% powerTM2Timer mode select 2MODCharge current controlTCOTemperature cutoffDIS

Discharge controlTSTemperature senseoutput

BAT

Battery voltage

INHCharge inhibit input

1

元器件交易网www.cecb2b.com

bq2004E/H

Pin Descriptions

SNS

DCMD

Discharge-before-chargecontrolinputTheDCMDinputcontrolstheconditionsthatenabledischarge-before-charge.DCMDispulledupinternally.Anegative-goingpulseonDCMDinitiatesadischargetoend-of-dischargevoltage(EDV)ontheBATpin,followedbyanewchargecyclestart.TyingDCMDtogroundenablesautomaticLED1–discharge-before-chargeoneverynewchargeLED2

cyclestart.

DSEL

Displayselectinput

VssThisthree-stateinputconfiguresthechargestatusdisplaymodeoftheLEDVCC

1andLED2out-putsandcanbeusedtodisabletop-offandpulsed-trickle.SeeTable2.

MOD

VSEL

Voltageterminationselectinput

Thisthree-stateinputcontrolsthevoltage-terminationtechniqueusedbythebq2004E/H.Whenhigh,PVDisactive.Whenfloating,-∆Visused.Whenpulledlow,bothPVDand-∆Varedisabled.

DIS

TM1–Timermodeinputs

TM2

TM1andTM2arethree-stateinputsthatconfigurethefastchargesafetytimer,voltageterminationhold-offtime,“top-off”,andtricklechargecontrol.SeeTable1.INHTCO

Temperaturecut-offthresholdinputInputtosetmaximumallowablebatterytemperature.IfthepotentialbetweenTSandSNSislessthanthevoltageattheTCOinput,thenfastchargeortop-offchargeister-minated.

TS

Temperaturesenseinput

Input,referencedtoSNS,foranexternalthermistermonitoringbatterytemperature.

BAT

Batteryvoltageinput

BATisthebatteryvoltagesenseinput,refer-encedtoSNS.Thisiscreatedbyahigh-impedanceresistor-dividernetworkcon-nectedbetweenthepositiveandthenegativeterminalsofthebattery.

2

Chargingcurrentsenseinput

SNScontrolstheswitchingofMODbasedonanexternalsenseresistorinthecurrentpathofthebattery.SNSisthereferencepo-tentialforboththeTSandBATpins.IfSNSisconnectedtoVSS,thenMODswitcheshighatthebeginningofchargeandlowattheendofcharge.

Chargestatusoutputs

Push-pulloutputsindicatingchargingstatus.SeeTable2.Ground

VCCsupplyinput5.0V,±10%powerinput.

Chargecurrentcontroloutput

MODisapush-pulloutputthatisusedtocontrolthechargingcurrenttothebattery.MODswitcheshightoenablechargingcur-renttoflowandlowtoinhibitchargingcurrentflow.

Dischargecontroloutput

Push-pulloutputusedtocontrolanexternaltransistortodischargethebatterybeforecharging.

Chargeinhibitinput

Whenlow,thebq2004E/Hsuspendsallchargeactions,drivesalloutputstohighim-pedance,andassumesalow-poweropera-tionalstate.Whentransitioningfromlowtohigh,anewchargecycleisstarted.

元器件交易网www.cecb2b.com

bq2004E/H

Functional Description

Figure2showsablockdiagramandFigure3showsastatediagramofthebq2004E/H.

Discharge-Before-Charge

TheDCMDinputisusedtocommanddischarge-before-chargeviatheDISoutput.Onceactivated,DISbecomesactive (high) untilVCELLfalls belowVEDV,at which timeDISgoeslowandanewfastchargecyclebegins.

TheDCMDinputisinternallypulleduptoVCC(itsinac-tivestate).Leavingtheinputunconnected,therefore,resultsindisablingdischarge-before-charge.AnegativegoingpulseonDCMDinitiatesdischarge-before-chargeatanytimeregardlessofthecurrentstateofthebq2004.IfDCMDistiedtoVSS,discharge-before-chargewillbethefirststepinallnewlystartedchargecycles.

BatteryVoltageandTemperatureMeasurements

Batteryvoltageandtemperaturearemonitoredformaximumallowablevalues.Thevoltagepresentedonthebatterysenseinput,BAT,shouldrepresentatwo-cellpotentialforthebatteryundercharge.Aresistor-dividerratioof:

RB1N

=- 1RB22

isrecommendedtomaintainthebatteryvoltagewithinthevalidrange,whereNisthenumberofcells,RB1istheresistorconnectedtothepositivebatteryterminal,andRB2istheresistorconnectedtothenegativebat-teryterminal.SeeFigure1.

Note:Thisresistor-dividernetworkinputimpedancetoend-to-endshouldbeatleast200kΩandlessthan1MΩ.Aground-referencednegativetemperaturecoefficientther-mistorplacedinproximitytothebatterymaybeusedasalow-costtemperature-to-voltagetransducer.Thetempera-turesensevoltageinputatTSisdevelopedusingaresistor-thermistornetworkbetweenVCCandVSS.SeeFigure1.BoththeBATandTSinputsarereferencedtoSNS,sothesignalsusedinsidetheICare:

VBAT-VSNS=VCELL

and

VTS-VSNS=VTEMP

StartingAChargeCycle

Anewchargecycleisstartedby:1.2.

ApplicationofVCCpower.

VCELLfallingthroughthemaximumcellvoltage,VMCVwhere:

VMCV= 0.8∗VCC±30mV

3.

AtransitionontheINHinputfromlowtohigh.

IfDCMDistiedlow,adischarge-before-chargewillbeexecutedasthefirststepofthenewchargecycle.Oth-erwise,pre-chargequalificationtestingwillbethefirststep.

Thebatterymustbewithintheconfiguredtemperatureandvoltagelimitsbeforefastchargingbegins.

ThevalidbatteryvoltagerangeisVEDVVEDV= 0.4∗VCC±30mV

Negative TemperatureCoefficient ThermisterVCCRT1TSNTCPACK -PACK +PACK+bq2004E/HBATRB1bq2004E/HSNSPACK-RT2RB2SNSFg2004a.epsFigure 1.Voltage and Temperature Monitoring

3

元器件交易网www.cecb2b.com

bq2004E/H

TM1TM2TCOOSCLED1LED2DSELDCMDDVENDisplayControlTimingControlTCOCheckLTFCheckVTS - VSNSTS Charge ControlState MachineVBAT - VSNSA/DEDVCheckSNSDischargeControlMODControlPWRControlMCVCheckBATDISMODINHVCCVSSBD200401.epsFigure 2.Block Diagram

ThevalidtemperaturerangeisVHTFVLTF= 0.4∗VCC±30mV

VHTF= [(1/3∗VLTF) + (2/3∗VTCO)]±30mV

VTCOisthevoltagepresentedattheTCOinputpin,andisconfiguredbytheuserwitharesistordividerbetweenVCCandground.Theallowedrangeis0.2to0.4∗VCC.

Ifthetemperatureofthebatteryisoutofrange,orthevoltageistoolow,thechipentersthechargependingstateandwaitsforbothconditionstofallwithintheiral-lowedlimits.Duringthecharge-pendingmode,theICfirstappliesatop-offchargetothebattery.

Thetop-offcharge,attherateof18ofthefastcharge,continuesuntilthefast-chargeconditionsaremetorthetop-offtime-outperiodisexceeded.TheICthentricklechargesuntilthefast-chargeconditionsaremet.Thereisnotimelimitonthechargependingstate;thechargerremainsinthisstateaslongasthevoltageortempera-tureconditonsareoutsideoftheallowedlimits.Ifthevoltageistoohigh,thechipgoestothebatteryabsentstateandwaitsuntilanewchargecycleisstarted.

Fastchargecontinuesuntilterminationbyoneormoreofthesixpossibleterminationconditions:

nnnnnn

Deltatemperature/deltatime(∆T/∆t)Peakvoltagedetection(PVD)Negativedeltavoltage(-∆V)MaximumvoltageMaximumtemperatureMaximumtime

PVDand-∆VTermination

Thebq2004E/HsamplesthevoltageattheBATpinonceevery34s.When-∆Vterminationisselected,ifVCELLislowerthananypreviouslymeasuredvalueby12mV±4mV(6mV/cell),fastchargeisterminated.WhenPVDterminationisselected,ifVCELLislowerthananyprevi-ouslymeasuredvalueby6mV±2mV(3mV/cell),fastchargeisterminated.ThePVDand-∆Vtestsarevalidintherange0.4∗VCC4

元器件交易网www.cecb2b.com

bq2004E/H

VSEL InputLowFloatHigh

Voltage TerminationDisabled

-∆VPVD

∆T/∆tTermination

Thebq2004E/HsamplesatthevoltageattheTSpinevery34s,andcomparesittothevaluemeasuredtwosamplesearlier.IfVTEMPhasfallen16mV±4mVormore,fastchargeisterminated.The∆T/∆tterminationtestisvalidonlywhenVTCOVoltageSampling

Eachsampleisanaverageofvoltagemeasurements.TheICtakes32measurementsinPVDmodeand16measurementsin-∆Vmode.Theresultingsampleperi-ods(9.17msand18.18ms,respectively)filterouthar-monicscenteredaround55Hzand109Hz.Thistech-niqueminimizestheeffectofanyAClineripplethatmayfeedthroughthepowersupplyfromeither50Hzor60HzACsources.Toleranceonalltimingis±16%.

TemperatureSampling

Eachsampleisanaverageof16voltagemeasurements.Theresultingsampleperiod(18.18ms)filtersouthar-monicsaround55Hz.Thistechniqueminimizestheef-fectofanyAClineripplethatmayfeedthroughthepowersupplyfromeither50Hzor60HzACsources.Tol-eranceonalltimingis±16%.

TemperatureandVoltageTerminationHold-off

Ahold-offperiodoccursatthestartoffastcharging.Duringthehold-offperiod,-∆Vand∆T/∆tterminationaredisabled.TheMODpinisenabledatadutycycleof260µsactiveforevery1820µsinactive.Thismodulationresultsinanaveragerate1/8ththatofthefastchargerate.Thisavoidsprematureterminationonthevoltagespikessometimesproducedbyolderbatterieswhenfast-chargecurrentisfirstapplied.Maximumvoltageandmaximumtemperatureterminationsarenotaf-fectedbythehold-offperiod.

MaximumVoltage,Temperature,andTime

AnytimeVCELLrisesaboveVMCV,theLEDsgooffandcur-rentflowintothebatteryceasesimmediately.IfVCELLthenfallsbackbelowVMCVbeforetMCV=1.5s±0.5s,thechiptransitionstotheChargeCompletestate(maximumvoltagetermination).IfVCELLremainsaboveVMCVattheexpirationoftMCV,thebq2004E/HtransitionstotheBat-teryAbsentstate(batteryremoval).SeeFigure3.

MaximumtemperatureterminationoccursanytimeVTEMPfallsbelowthetemperaturecutoffthresholdVTCO.ChargewillalsobeterminatedifVTEMPrisesabovethelowtemperaturefaultthreshold,VLTF,afterfastchargebegins.

Table 1.Fast Charge Safety Time/Hold-Off/Top-Off Table

CorrespondingFast-Charge

Rate2004EC/4C/21C2C4CC/21C2C4C

2004HC/8C/4C/21C2CC/4C/21C2C

TM1LowFloatHighLowFloatHighLowFloatHigh

TM2LowLowLowFloatFloatFloatHighHighHigh

TypicalFast-ChargeSafetyTime (min)2004E32517739191773919

2004H6503251773932517739

TypicalPVD, -∆VHold-OffTime(s)2004E137627313768627313768

Pulse-TricklePeriod (Hz)2004E

2004H

Top-OffRate

2004H

2004H2004E2736627313766273137

Pulse-TrickleRateDisabledC/512C/512C/512C/512C/512C/512C/512C/512

DisabledDisabledDisabledDisabledDisabledC/16C/8C/4C/2

C/32C/16C/18C/4

Disabled157.53.751.88157.53.751.88

30157.53.7530157.53.75

Note:Typical conditions = 25°C,VCC= 5.0V.

5

元器件交易网www.cecb2b.com

bq2004E/H

Table 2.bq2004E/H LED Output Summary

Mode 1bq2004EBattery absentDSEL = VSSFastchargependingoradischarge-before-chargeinprogressFast chargingFast charge complete, top-off, and/or trickleMode 1bq2004HBattery absentDischarge-before-charge in progressDSEL = VSSFast charge pendingFast chargingFast charge complete, top-off, and/or trickleMode 2bq2004EBattery absentDSEL = FloatingFast charge pending or discharge-before-charge in progressFast chargingFast charge complete, top-off, and/or trickleMode 2bq2004HBattery absentDischarge-before-charge in progressDSEL = FloatingFast charge pendingFast chargingFast charge complete, top-off, and/or trickleMode 3bq2004E/HBattery absentDSEL = VCCFast charge pending or discharge-before-charge in progressFast chargingFast charge complete, top-off, and/or trickleNote:

Pulse trickle is inhibited in Mode 2.

Charge Action StateCharge Action State (See note)Charge Action State (See note)Charge Action StateCharge Action StateLED1LowHighLowHighLED1LowHighLowLowHighLED1LowHighLowHighLED1LowHighLowLowHighLED1LowLowLowHigh181818181818LED2LowHighHighLowLED2LowHighsecond highsecond lowHighLowLED2LowHighHighLowLED2LowHighsecond highsecond lowHighLowLED2Lowsecond highsecond lowHighLow6

元器件交易网www.cecb2b.com

bq2004E/H

MaximumchargetimeisconfiguredusingtheTMpin.TimesettingsareavailableforcorrespondingchargeratesofC/4,C/2,1C,and2C.Maximumtime-outtermi-nationisenforcedonthefast-chargephase,thenreset,andenforcedagainonthetop-offphase,ifselected.Thereisnotimelimitonthetrickle-chargephase.

ChargeCurrentControl

Thebq2004E/HcontrolschargecurrentthroughtheMODoutputpin.Thecurrentcontrolcircuitryisdesignedtosup-portimplementationofaconstant-currentswitchingregulatorortogateanexternallyregulatedcurrentsource.

Whenusedinswitchmodeconfiguration,thenominalregulatedcurrentis:

IREG= 0.225V/RSNS

ChargecurrentismonitoredattheSNSinputbythevoltagedropacrossasenseresistor,RSNS,betweenthelowsideofthebatterypackandground.RSNSissizedtoprovidethedesiredfastchargecurrent.

IfthevoltageattheSNSpinislessthanVSNSLO,theMODoutputisswitchedhightopasschargecurrenttothebattery.

WhentheSNSvoltageisgreaterthanVSNSHI,theMODoutputisswitchedlow—shuttingoffchargingcurrenttothebattery.

VSNSLO= 0.04∗VCC±25mVVSNSHI= 0.05∗VCC±25mV

Whenusedtogateanexternallyregulatedcurrentsource,theSNSpinisconnectedtoVSS,andnosensere-sisitorisrequired.

Top-offCharge

Anoptionaltop-offchargephasemaybeselectedtofollowfastchargeterminationfortheC/2through4Crates.ThisphasemaybenecessaryonNiMHorotherbatterychemistriesthathaveatendencytoterminatechargepriortoreachingfullcapacity.Withtop-offen-abled,chargingcontinuesatareducedrateafterfast-chargeterminationforaperiodoftimeequalto0.235∗thefast-chargesafetytime(SeeTable1.)Dur-ingtop-off,theMODpinisenabledatadutycycleof260µsactiveforevery1820µsinactive.Thismodula-tionresultsinanaveragerate1/8ththatofthefastchargerate.Maximumvoltage,time,andtemperaturearetheonlyterminationmethodsenabledduringtop-off.

Pulse-TrickleCharge

Pulse-tricklechargingmaybeconfiguredtofollowthefastchargeandoptionaltop-offchargephasestocom-pensateforself-dischargeofthebatterywhileitisidleinthecharger.

Inthepulse-tricklemode,MODisactivefor260µsofaperiodspecifiedbythesettingsofTM1andTM2.SeeTable1.Theresultingtrickle-chargerateisC/512.Bothpulsetrickleandtop-offmaybedisabledbytyingTM1andTM2toVSSorbyselectingMode2inthedis-play.

ChargeStatusIndication

ChargestatusisindicatedbytheLED1andLED2out-puts.Thestateoftheseoutputsinthevariouschargecy-clephasesisgiveninTable2andillustratedinFigure3.Inallcases,ifVCELLexceedsthevoltageattheMCVpin,bothLED1andLED2outputsareheldlowregard-lessofotherconditions.BothcanbeusedtodirectlydriveanLED.

7

元器件交易网www.cecb2b.com

bq2004E/H

New Charge Cycle Started byAny One of:VCC Rising to Valid LevelBattery Replacement(VCELL Falling through VMCV)Inhibit (INH) ReleasedVEDV < VCELL < VMCVYesDCMD Tied to Ground?NoVCELL < VEDVBattery Voltage?VCELL < VEDVVCELL > VMCVFalling Edgeon DCMDDischarge-Before-ChargeChargePendingVTEMP > VLTF orVTEMP < VHTFBattery Temperature?VHTF < VTEMP < VLTFVCELL > VMCVVCELL > Top-Off andVMCVPulse-TrickleChargeBatteryAbsentVEDV < VCELL < VMCVandVHTF < VTEMP < VLTFVCELL >VMCVFastChargePulseTrickleChargeVCELL tMCVPulseTrickleCharge - V or T/ t orVTEMP < VTCOorMaximumTime OutTop-OffSelected?NoVCELL >VMCVTop-OffChargeVTEMP< VTCOor 0.235 MaximumTime OutVCELL >VMCVChargeCompleteYesPulseTrickleChargeSD2004EH.epsFigure 3.Charge Algorithm State Diagram

8

元器件交易网www.cecb2b.com

bq2004E/H

Absolute Maximum Ratings

SymbolVCCVTTOPRTSTGTSOLDERTBIASNote:

Parameter

VCCrelative toVSS

DC voltage applied on any pin ex-cludingVCCrelative toVSSOperating ambient temperatureStorage temperatureSoldering temperatureTemperature under bias

Minimum-0.3-0.3-20-55--40

Maximum+7.0+7.0+70+125+260+85

UnitVV°C°C°C°C

10 sec max.Commercial

Notes

Permanent device damage may occur ifAbsolute Maximum Ratingsare exceeded.Functional opera-tion should be limited to the Recommended DC Operating Conditions detailed in this data sheet.Expo-sure to conditions beyond the operational limits for extended periods of time may affect device reliability.

DC Thresholds

SymbolVSNSHIVSNSLOVLTFVHTFVEDVVMCVVTHERM-∆VPVD

(TA=TOPR;VCC±10%)

Rating0.05*VCC0.04 *VCC0.4*VCC

(1/3*VLTF) + (2/3*VTCO)

0.4*VCC0.8*VCC

-16-12-6

Tolerance±0.025±0.010±0.030±0.030±0.030±0.030±4±4±2

UnitVVVVVVmVmVmV

VTEMP≥VLTFinhib-its/terminates chargeVTEMP≤VHTFinhibitscharge

VCELLVCELL>VMCVinhibits/terminates chargeVCC= 5V,TA= 25°CVCC= 5V,TA= 25°CVCC= 5V,TA= 25°C

Notes

Parameter

High threshold atSNSresult-ing in MOD = Low

Low threshold atSNSresult-ing in MOD = HighLow-temperature faultHigh-temperature faultEnd-of-discharge voltageMaximum cell voltageTS input changefor∆T/∆tdetection

BAT input change for-∆Vdetection

BAT input change forPVDdetection

9

元器件交易网www.cecb2b.com

bq2004E/H

Recommended DC Operating Conditions(TA= TOPR)

SymbolVCCVBATVCELLVTSVTEMPVTCOVIH

Condition

Supply voltageBattery inputBAT voltage potentialThermistor inputTS voltage potentialTemperature cutoffLogic input highLogic input high

VIL

Logic input lowLogic input low

VOHVOLICCISBIOHIOLIL

Logic output highLogic output lowSupply currentStandby current

DIS,LED1,LED2,MODsourceDIS,LED1,LED2,MODsinkInput leakageInput leakage

IILIIH

Logic input low sourceLogic input high source

Minimum4.500000.2*VCC

2.0VCC- 0.3

--VCC- 0.8

----1010-50--70

Typical5.0-----------1-------Maximum

5.5VCCVCCVCCVCC0.4*VCC

--0.80.3-0.831--±140070-UnitVVVVVVVVVVVVmAµAmAmAµAµAµAµA

VTS- VSNS

Valid∆T/∆t rangeDCMD,INH

TM1, TM2, DSEL, VSELDCMD,INHTM1, TM2, DSEL, VSELDIS, MOD, LED1, LED2,IOH≤-10mA

DIS,MOD,LED1,LED2,IOL≤10mAOutputs unloadedINH= VIL

@VOH= VCC- 0.8V@VOL= VSS+ 0.8VINH, BAT, V = VSSto VCCDCMD, V = VSSto VCCTM1, TM2, DSEL, VSEL,V = VSSto VSS+ 0.3VTM1, TM2, DSEL, VSEL,V = VCC- 0.3V to VCC

TM1,TM2,DSEL,andVSELshouldbeleftdisconnected(floating)forZlogicinputstateVBAT- VSNS

Notes

IIZNote:

Tri-state-2-2µA

All voltages relative to VSSexcept as noted.

10

元器件交易网www.cecb2b.com

bq2004E/H

Impedance

SymbolRBATRTSRTCORSNS

Parameter

Battery input impedanceTS input impedanceTCO input impedanceSNS input impedance

Minimum

50505050

Typical

----Maximum

----UnitMΩMΩMΩMΩ

Timing

SymboltPWdFCVfREGtMCVNote:

(TA= 0 to +70°C; VCC±10%)

Parameter

Pulse width forDCMDandINHpulse commandTime base variationMOD output regulationfrequency

Maximum voltage termi-nation time limit

MinimumTypical

1-16-1

----Maximum

-163002

Unitµs%kHzs

Time limit to distinguish battery re-moved from charge complete.

Notes

Pulse start for charge or dischargebefore chargeVCC= 4.75V to 5.25V

Typical is at TA= 25°C,VCC= 5.0V.

11

元器件交易网www.cecb2b.com

bq2004E/H

16-Pin DIP Narrow (PN)

16-Pin PN(0.300\" DIP)

Inches

MillimetersDimension

Min.Max.Min.Max.A0.1600.1804.0.57A10.0150.0400.381.02B0.0150.0220.380.56B10.0550.0651.401.65C0.0080.0130.200.33D0.7400.77018.8019.56E0.3000.3257.628.26E10.2300.2805.847.11e0.3000.3707.629.40G0.0900.1102.292.79L0.1150.1502.923.81S

0.020

0.040

0.51

1.02

12

元器件交易网www.cecb2b.com

16-Pin SOIC Narrow (SN)

DeBEHCAA1.004L13

bq2004E/H

16-Pin SN(0.150\" SOIC)

Inches

MillimetersDimension

Min.Max.Min.Max.A0.0600.0701.521.78A10.0040.0100.100.25B0.0130.0200.330.51C0.0070.0100.180.25D0.3850.4009.7810.16E0.1500.1603.814.06e0.0450.0551.141.40H0.2250.2455.726.22L

0.015

0.035

0.38

0.

元器件交易网www.cecb2b.com

bq2004E/H

DataSheetRevisionHistory

Change No.

1234

Note:

Change 1 = Oct.1997 B changes from Sept.1996 (bq2004E),Feb.1997 (bq2004H).Change 2 = Feb.1998 C changes from Oct.1997 B.Change 3 = Dec.1998 D changes from Feb.1998 C.Change 4 = June 1999 E changes from Dec.1998 D.

Page No.All75

Description

Combined bq2004E and bq2004H,revised andexpanded format of this data sheet

Separatedbq2004E and bq2004H in Table 2,LEDOutput Summary

Description of charge-pending state

Nature of ChangeClarificationClarificationClarification

14

元器件交易网www.cecb2b.com

bq2004E/H

Ordering Information

bq2004

PackageOption:

PN=16-pinnarrowplasticDIPSN=16-pinnarrowSOIC

Device:

E=bq2004EFast-ChargeICH=bq2004HFast-ChargeIC

15

元器件交易网www.cecb2b.com

IMPORTANT NOTICE

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinueany product or service without notice, and advise customers to obtain the latest version of relevant informationto verify, before placing orders, that information being relied on is current and complete. All products are soldsubject to the terms and conditions of sale supplied at the time of order acknowledgement, including thosepertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extentTI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarilyperformed, except those mandated by government requirements.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OFDEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICALAPPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, ORWARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHERCRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TOBE FULLY AT THE CUSTOMER’S RISK.

In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or representthat any license, either express or implied, is granted under any patent right, copyright, mask work right, or otherintellectual property right of TI covering or relating to any combination, machine, or process in which suchsemiconductor products or services might be or are used. TI’s publication of information regarding any thirdparty’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

Copyright © 1999, Texas Instruments Incorporated