充电www.55125.cn

bq25070www.
ti.
com.
cnZHCS393–JULY2011具有50mALDO的1A、单路输入、单节LiFePO4线性电池充电器查询样品:bq250701特性单节LiFePO4电池充电算法充电状态指示30V输入额定值及10.
5V过压保护(OVP)采用小型2mm*3mm10引脚SON封装50mA集成型低压降线性稳压器(LDO)应用可通过单个输入接口(CTRL)设置充电电流智能手机7%充电电流调节准确度移动电话热调整及保护便携式媒体播放器软起动功能可减小浪涌电流低功耗手持式设备电池NTC监测说明bq25070是一款面向空间受限便携式应用的高集成度LiFePO4线性电池充电器.
该器件可依靠一个USB端口或AC适配器工作,并能以高达1A的充电电流来给单节LiFePO4电池充电.
30V的输入电压范围和输入过压保护功能可支持低成本的未调节适配器.
bq25070具有单个电源输出,用于给电池充电以及为系统供电.
充电电流可采用CTRL输入设置为高达1A.
此外,该IC中还集成了一个4.
9V±10%50mALDO,用于为低功耗外部电路供电.
充电电流可采用CTRL输入设置为高达1A.
此外,该IC中还集成了一个4.
9V±10%50mALDO,用于为低功耗外部电路供电.
LiFePO4充电算法免除了锂离子电池充电周期中常用的恒定电压模式控制.
取而代之的是,将电池快速充电至过充电电压,然后使之衰减至一个较低的浮动充电电压门限.
取消恒定电压控制可显著地缩短充电时间.
在充电周期中,一个内部控制环路负责监视IC结温,并在内部温度门限被超过时减小充电电流.
充电器功率级和充电电流感应功能完全集成在一起.
充电器功能具有高准确度电流和电压调节环路以及充电状态显示.
应用电路原理图1Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright2011,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.
ProductionprocessingdoesnotEnglishDataSheet:SLUSA66necessarilyincludetestingofallparameters.
bq25070ZHCS393–JULY2011www.
ti.
com.
cnThesedeviceshavelimitedbuilt-inESDprotection.
TheleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
ORDERINGINFORMATION(1)PARTNUMBERILIM(DEF)VBAT(OVCH)VBAT(FLOAT)VOVPVLDOMARKINGbq25070DQCR300mA3.
7V3.
5V10.
5V4.
9VQUSbq25070DQCT300mA3.
7V3.
5V10.
5V4.
9VQUS(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orvisitthedeviceproductfolderonti.
com(www.
ti.
com),ABSOLUTEMAXIMUMRATINGS(1)overoperatingfree-airtemperaturerange(unlessotherwisenoted)VALUEUNITIN(withrespecttoGND)–0.
3to30VInputVoltageCTRL,TS(withrespecttoGND)–0.
3to7VOutputVoltageBAT,OUT,LDO,CHG,IMON(withrespecttoGND)–0.
3to7VInputCurrent(Continuous)IN1.
2AOutputCurrent(Continuous)BAT1.
2AOutputCurrent(Continuous)LDO100mAOutputSinkCurrentCHG5mAJunctiontemperature,TJ–40to150°CStoragetemperature,TSTG–65to150°C(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.
Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.
Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
Allvoltagevaluesarewithrespecttothenetworkgroundterminalunlessotherwisenoted.
THERMALINFORMATIONbq25070THERMALMETRIC(1)SONUNITS10PINSθJAJunction-to-ambientthermalresistance(2)58.
7°C/WθJCtopJunction-to-case(top)thermalresistance(3)3.
9(1)有关传统和新的热度量的更多信息,请参阅IC封装热度量应用报告SPRA953.
(2)在JESD51-2a描述的环境中,按照JESD51-7的指定在一个JEDEC标准high-K测试电路板上进行仿真,从而获得自然对流条件下的结到外部热阻.
(3)通过在封装顶部进行冷板测试仿真来获得结到芯片外壳(顶部)热阻.
不存在特定的JEDEC标准测试,但可在ANSISEMI标准G30-88中找到内容接近的说明.
RECOMMENDEDOPERATINGCONDITIONSMINMAXUNITSINvoltagerange3.
75(1)28VINVINoperatingvoltagerange3.
75(1)10.
2IINInputcurrent,IN1AIOUTOutputCurrentinchargemode,OUT1ATJJunctionTemperature0125°C(1)Chargecurrentmaybelimitedatlowinputvoltagesduetothedropoutofthedevice.
2Copyright2011,TexasInstrumentsIncorporatedbq25070www.
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cnZHCS393–JULY2011ELECTRICALCHARACTERISTICSOverjunctiontemperaturerange0°C≤TJ≤125°Candrecommendedsupplyvoltage(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITSINPUTVUVLOUnder-voltagelock-outVIN:0V→4V3.
153.
303.
55VVHYS-UVLOHysteresisonUVLOVIN:4V→0V250mVVBATUVLOBatteryUVLOVBATrising1.
952.
052.
15VVHYS-BUVLOHysteresisonBATUVLOVBATfalling125mVInputpowergoodifVIN>VBAT+ValidinputsourcethresholdVIN-SLPaboveVIN-SLPVIN-SLP3075150mVVBATVBAT=3.
6V,VIN:3.
5V→4VVHYS-INSLPHysteresisonVIN-SLPVBAT=3.
6V,VIN:4V→3.
5V183254mVDelaytime,inputpowerlosstochargerTimemeasuredfromVIN:5V→2.
5VtDGL(NO-IN)32msturn-off1μsfall-timeVOVPInputover-voltageprotectionthresholdVIN:5V→11V10.
210.
510.
8VVHYS-OVPHysteresisonOVPVIN:11V→5V100mVtBLK(OVP)Inputover-voltageblankingtime100μsTimemeasuredfromVIN:11V→5VtREC(OVP)Inputover-voltagerecoverytime100μs1μsfall-timetoLDO=HI,VBAT=3.
5VQUIESCENTCURRENTVIN=0V,VCHG=High,TSEnabled120150μAIBAT(PDWN)BatterycurrentintoBAT,NoinputconnectedVIN=0V,VCHG=Low,TSDisabled,6μATJ=85°CCTRL=HI,VIN=5.
5V0.
25IIN(STDBY)StandbycurrentintoINpinCTRL=HI,VIN≤VOVP0.
5mACTRL=HI,VIN>VOVP2VIN=6V,NoloadonOUTpin,ICCActivesupplycurrent,INpin3mAVBAT>VBAT(REG),ICenabledBATTERYCHARGERFAST-CHARGETA=0°Cto125°C3.
4653.
53.
535VBAT(REG)BatteryfloatchargevoltageVTA=25°C3.
4653.
53.
529VBAT(OVCH)Batteryoverchargevoltagethreshold3.
623.
73.
78V4pulsesonCTRL87931005pulsesonCTRL1741872006pulsesonCTRL2612803007pulsesonCTRL348374400InputCurrentLimit(selectedbyCTRLIIN(LIM)mAinterface)8pulsesonCTRL4354675009pulsesonCTRL60865470010pulsesonCTRL73979485011pulsesonCTRL8699351000VDO(IN-OUT)VIN–VOUTVIN=3.
5V,IOUT=0.
75A5001400mVKIMON=IIMON/ICHG,RIMON=1kΩ,KIMONInputcurrentmonitorratio1mA/ACurrentprogrammedusingCTRLVIMON(MAX)MaximumIMONvoltageIMONopen1.
21.
25VIINVLOWV,thenormalchargecycleisused.
ChargerOperationwithMinimumSystemVoltageModeEnabledFigure13.
TypicalChargingCyclewithMinimumSystemVoltageEnabledPrechargeMode(VBAT≤VLOWV)Thebq25070entersprechargemodewhenVBAT≤VLOWV.
Uponenteringprechargemode,thebatteryischargedwitha47.
5mAcurrentandCHGgoeslow.
10Copyright2011,TexasInstrumentsIncorporatedbq25070www.
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cnZHCS393–JULY2011FastChargeModeOnceVBAT>VLOWV,thebq25070entersconstantcurrent(CC)modewherechargecurrentisregulatedusingtheinternalMOSFETsbetweenINandOUT.
Thetotalcurrentissharedbetweentheoutputloadandthebattery.
OncethebatteryvoltagechargesuptoVBAT(OVCH),theCHGoutputgoeshighindicatingthechargecycleiscompleteandthebq25070switchesthebatteryregulationvoltagetoVBAT(REG).
ThebatteryvoltageisallowedtorelaxdowntoVBAT(REG).
ThechargerremainsenabledandregulatestheoutputtoVBAT(REG).
IfatanytimethebatteryfallsbelowVREC,thechargecyclerestarts.
CHARGECURRENTTRANSLATOR(IMON)Whenthechargerisenabled,internalcircuitsgenerateacurrentproportionaltothechargecurrentattheIMONinput.
ThecurrentoutofIMONis1/1000(±10%)ofthechargecurrent.
Thiscurrent,whenappliedtotheexternalchargecurrentprogrammingresistor,R1(Figure12),generatesananalogvoltagethatcanbemonitoredbyanexternalhosttocalculatethecurrentsourcedfromBAT.
Connecta1kΩresistorfromIMONtoGND.
ThevoltageatIMONiscalculatedas:(1)INPUTOVERVOLTAGEPROTECTIONThebq25070containsaninputovervoltageprotectioncircuitthatdisablestheLDOoutputandchargingwhentheinputvoltagerisesaboveVOVP.
Thispreventsdamagefromfaultyadapters.
TheOVPcircuitrycontainsan115μsdeglitchthatpreventsringingontheinputfromlinetransientsfromtrippingtheOVPcircuitryfalsely.
IfanadapterwithanoutputgreaterthanVOVPispluggedin,theICcompletessoft-startpowerupandthenshutsdownifthevoltageremainsaboveVOVPafter115μs.
TheLDOremainsoffandchargingremainsdisableduntiltheinputvoltagefallsbelowVOVP.
UNDER-VOLTAGELOCKOUT(UVLO)Thebq25070remainsinpowerdownmodewhentheinputvoltageisbelowtheunder-voltagelockoutthreshold(VUVLO).
Duringthismode,thecontrolinput(CTRL)isignored.
TheLDO,thechargeFETconnectedbetweenINandOUTareoffandthestatusoutput(CHG)ishighimpedance.
OncetheinputvoltagerisesaboveVUVLO,theinternalcircuitryisturnedonandthenormaloperatingproceduresarefollowed.
EXTERNALNTCMONITORING(TS)Thebq25070featuresaflexible,voltagebasedexternalbatterypacktemperaturemonitoringinput.
TheTSinputconnectstotheNTCthermistorinthebatterypacktomonitorbatterytemperatureandpreventdangerousover-temperatureconditions.
Duringcharging,thevoltageatTSiscontinuouslymonitored.
If,atanytime,thevoltageatTSisoutsideoftheoperatingrange(VCOLDtoVHOT),chargingissuspended.
WhenthevoltagemeasuredatTSreturnstowithintheoperationwindow,chargingisresumed.
Whenchargingissuspendedduetoabatterypacktemperaturefault,theCHGoutputremainslowandcontinuestoindicatecharging.
ThetemperaturethresholdsareprogrammedusingaresistordividerfromLDOtoGNDwiththeNTCthermistorconnectedtothecentertapfromTStoGND.
SeeFigure14forthecircuitexample.
ThevalueofR1andR2arecalculatedusingthefollowingequations:(2)(3)RHOTistheexpectedthermistorresistanceattheprogrammedhotthreshold;RCOLDistheexpectedthermistorresistanceattheprogrammedcoldthreshold.
Copyright2011,TexasInstrumentsIncorporated11bq25070ZHCS393–JULY2011www.
ti.
com.
cnForapplicationsthatdonotrequiretheTSmonitoringfunction,setR1=490kΩandR2=100kΩtosettheTSvoltageatavalidlevelandmaintaincharging.
Figure14.
NTCMonitoringFunction50mALDO(LDO)TheLDOoutputofthebq25070isalowdropoutlinearregulator(LDO)thatsuppliesupto50mAwhileregulatingtoVLDO.
TheLDOisactivewhenevertheinputvoltageisaboveVUVLOandbelowVOVP.
ItisnotaffectedbytheCTRLinput.
TheLDOoutputisusedtopowerandprotectcircuitrysuchasUSBtransceiversfromtransientsontheinputsupply.
CHARGESTATUSINDICATOR(CHG)Thebq25070containsanopendrainCHGoutputthatindicateswhenchargecyclesandfaults.
Whenchargingabatteryinprechargeorfastchargemode,theCHGoutputispulledtoGND.
OncetheBAToutputreachestheoverchargevoltagethreshold,CHGgoeshighimpedancetosignalthebatteryisfullycharged.
TheCHGoutputgoeslowduringbatteryrechargecyclestosignalthehost.
Additionally,CHGnotifiesthehostifaNTCtemperaturefaulthasoccurred.
CHGpulseswithaperiodof100msanda50%dutycycleifaTSfaultsoccurs.
ConnectCHGtotherequiredlogiclevelvoltagethrougha1kΩto100kΩresistortousethesignalwithamicroprocessor.
ICHGmustbebelow5mA.
TheICmonitorstheCHGpinwhennoinputisconnectedtoverifyifthesystemcircuitryisactive.
IfthevoltageatCHGislogicbeingdrivelowwhennoinputisconnected,theTScircuitisturnedoffforalowquiescentcurrentstate.
OncethevoltageatCHGincreasesabovelogichigh,theTScircuitisturnedon.
SINGLEINPUTINTERFACE(CTRL)CTRLisusedtoenable/disablethedeviceaswellasselecttheinputcurrentlimit,enable/disablecharge,extendtheTSoperationrangeanddisableVIN-DPMmode.
CTRLispulledlowtoenablethedevice.
Afterthe50μsdeglitchexpires,theICentersthe32msWAITstate.
CTRLmaybeusedtoprogramthebq25070duringthistime.
OncetWAITexpires,theICstartsup.
IfnocommandissenttoCTRLduringtWAIT,theICstartsupwithadefault285mAcurrentlimit.
ProgrammingthedifferentmodesisdonebypulsingtheCTRLinput.
SeeTable1foramapofthedifferentmodes.
ThewidthoftheCTRLpulsesisunimportantaslongastheyarebetween50μsand1000μslong.
Thetimebetweenpulsesmustbebetween50μsand1000μstobeproperlyread.
OnceCTRLisheldlowfor2ms,thenumberofpulsesispassedtothecontrollogicanddecodedandthenthemodechanges.
Toensureproperoperation,donotsendmorethan16pulsesinoneprogrammingcycle.
12Copyright2011,TexasInstrumentsIncorporatedbq25070www.
ti.
com.
cnZHCS393–JULY2011Table1.
PulseCountingMapforCTRLInterface#ofPulsesCurrentLimit1NoChange2NoChange3NoChange493mA5187mA6280mA7374mA8467mA9654mA10794mA11935mA>11NoChangeIf,atanytime,theCTRLinputisheldhighformorethan2ms,theICisdisabled.
Whendisabled,chargingissuspendedandthebq25070inputquiescentcurrentisreduced.
Figure15.
CTRLTimingDiagramTHERMALREGULATIONANDTHERMALSHUTDOWNThebq25070containsathermalregulationloopthatmonitorsthedietemperaturecontinuously.
IfthetemperatureexceedsTJ(REG),thedeviceautomaticallyreducesthechargingcurrenttopreventthedietemperaturefromincreasingfurther.
Insomecases,thedietemperaturecontinuestorisedespitetheoperationofthethermalloop,particularlyunderhighVINconditions.
IfthedietemperatureincreasestoTJ(OFF),theICisturnedoff.
OncethedevicedietemperaturecoolsbyTJ(OFF-HYS),thedeviceturnsonandreturnstothermalregulation.
Continuousover-temperatureconditionsresultinthepulsingoftheloadcurrent.
IfthejunctiontemperatureofthedeviceexceedsTJ(OFF),thechargeFETisturnedoff.
TheFETisturnedbackonwhenthejunctiontemperaturefallsbelowTJ(OFF)–TJ(OFF-HYS).
Notethatthesefeaturesmonitorthedietemperatureofthebq25070.
Thisisnotsynonymouswithambienttemperature.
SelfheatingexistsduetothepowerdissipatedintheICbecauseofthelinearnatureofthebatterychargingalgorithm.
Copyright2011,TexasInstrumentsIncorporated13bq25070ZHCS393–JULY2011www.
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com.
cnAPPLICATIONINFORMATIONSELECTIONOFINPUT/OUTPUTCAPACITORSInmostapplications,allthatisneededisahigh-frequencydecouplingcapacitorontheinputpowerpin.
Fornormalchargingapplications,a0.
1μFceramiccapacitor,placedincloseproximitytotheINpinandGNDpadworksbest.
Insomeapplications,dependingonthepowersupplycharacteristicsandcablelength,itmaybenecessarytoincreasetheinputfiltercapacitortoavoidexceedingtheOVPvoltagethresholdduringadapterhotplugeventswheretheringingexceedsthedeglitchtime.
Thechargerinthebq25070requiresacapacitorfromOUTtoGNDforloopstability.
Connecta1μFceramiccapacitorfromBATtoGNDclosetothepinsforbestresults.
Moreoutputcapacitancemayberequiredtominimizetheoutputdroopduringlargeloadtransients.
TheLDOalsorequiresanoutputcapacitorforloopstability.
Connecta0.
1μFceramiccapacitorfromLDOtoGNDclosetothepins.
Forimprovedtransientresponse,thiscapacitormaybeincreased.
THERMALCONSIDERATIONSThebq25070ispackagedinathermallyenhancedQFNpackage.
ThepackageincludesathermalpadtoprovideaneffectivethermalcontactbetweentheICandtheprintedcircuitboard(PCB).
FullPCBdesignguidelinesforthispackageareprovidedintheapplicationnoteentitled:QFN/SONPCBAttachmentApplicationNote(SLUA271).
Themostcommonmeasureofpackagethermalperformanceisthermalimpedance(θJA)measured(ormodeled)fromthechipjunctiontotheairsurroundingthepackagesurface(ambient).
ThemathematicalexpressionforθJAis:Where:(4)TJ=chipjunctiontemperatureTA=ambienttemperaturePD=devicepowerdissipationFactorsthatcangreatlyinfluencethemeasurementandcalculationofθJAinclude:WhetherornotthedeviceisboardmountedTracesize,composition,thickness,andgeometryOrientationofthedevice(horizontalorvertical)VolumeoftheambientairsurroundingthedeviceundertestandairflowWhetherothersurfacesareincloseproximitytothedevicebeingtestedThedevicepowerdissipation,PD,isafunctionofthechargerateandthevoltagedropacrosstheinternalPowerFET.
Itcanbecalculatedfromthefollowingequationwhenabatterypackisbeingcharged:PD=(VIN–VOUT)*IOUTDuetothechargeprofileofLiFePO4batteriesthemaximumpowerdissipationistypicallyseenatthebeginningofthechargecyclewhenthebatteryvoltageisatitslowest.
Seethechargingprofile,Figure13.
Iftheboardthermaldesignisnotadequatetheprogrammedfastchargeratecurrentmaynotbeachievedundermaximuminputvoltageandminimumbatteryvoltage,asthethermalloopcanbeactive,effectivelyreducingthechargecurrenttoavoidexcessiveICjunctiontemperature.
PCBLAYOUTCONSIDERATIONSItisimportanttopayspecialattentiontothePCBlayout.
Thefollowingprovidessomeguidelines:Toobtainoptimalperformance,thedecouplingcapacitorfromINtoGND(thermalpad)andtheoutputfiltercapacitorsfromOUTtoGND(thermalpad)shouldbeplacedascloseaspossibletothebq25070,withshorttracerunstobothIN,OUTandGND(thermalpad).
14Copyright2011,TexasInstrumentsIncorporatedbq25070www.
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com.
cnZHCS393–JULY2011Alllow-currentGNDconnectionsshouldbekeptseparatefromthehigh-currentchargeordischargepathsfromthebattery.
Useasingle-pointgroundtechniqueincorporatingboththesmallsignalgroundpathandthepowergroundpath.
ThehighcurrentchargepathsintoINpinandfromtheOUTpinmustbesizedappropriatelyforthemaximumchargecurrentinordertoavoidvoltagedropsinthesetraces.
Thebq25070ispackagedinathermallyenhancedSONpackage.
ThepackageincludesathermalpadtoprovideaneffectivethermalcontactbetweentheICandtheprintedcircuitboard(PCB);thisthermalpadisalsothemaingroundconnectionforthedevice.
ConnectthethermalpadtothePCBgroundconnection.
FullPCBdesignguidelinesforthispackageareprovidedintheapplicationnoteentitled:QFN/SONPCBAttachmentApplicationNote(SLUA271).
Copyright2011,TexasInstrumentsIncorporated15PACKAGEOPTIONADDENDUMwww.
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com11-Dec-2020Addendum-Page1PACKAGINGINFORMATIONOrderableDeviceStatus(1)PackageTypePackageDrawingPinsPackageQtyEcoPlan(2)Leadfinish/Ballmaterial(6)MSLPeakTemp(3)OpTemp(°C)DeviceMarking(4/5)SamplesBQ25070DQCRACTIVEWSONDQC103000RoHS&GreenNIPDAULevel-2-260C-1YEAR-40to85QUSBQ25070DQCTACTIVEWSONDQC10250RoHS&GreenNIPDAULevel-2-260C-1YEAR-40to85QUS(1)Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.
LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.
NRND:Notrecommendedfornewdesigns.
Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.
PREVIEW:Devicehasbeenannouncedbutisnotinproduction.
Samplesmayormaynotbeavailable.
OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.
(2)RoHS:TIdefines"RoHS"tomeansemiconductorproductsthatarecompliantwiththecurrentEURoHSrequirementsforall10RoHSsubstances,includingtherequirementthatRoHSsubstancedonotexceed0.
1%byweightinhomogeneousmaterials.
Wheredesignedtobesolderedathightemperatures,"RoHS"productsaresuitableforuseinspecifiedlead-freeprocesses.
TImayreferencethesetypesofproductsas"Pb-Free".
RoHSExempt:TIdefines"RoHSExempt"tomeanproductsthatcontainleadbutarecompliantwithEURoHSpursuanttoaspecificEURoHSexemption.
Green:TIdefines"Green"tomeanthecontentofChlorine(Cl)andBromine(Br)basedflameretardantsmeetJS709Blowhalogenrequirementsof<=1000ppmthreshold.
Antimonytrioxidebasedflameretardantsmustalsomeetthe<=1000ppmthresholdrequirement.
(3)MSL,PeakTemp.
-TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.
(4)Theremaybeadditionalmarking,whichrelatestothelogo,thelottracecodeinformation,ortheenvironmentalcategoryonthedevice.
(5)MultipleDeviceMarkingswillbeinsideparentheses.
OnlyoneDeviceMarkingcontainedinparenthesesandseparatedbya"~"willappearonadevice.
IfalineisindentedthenitisacontinuationofthepreviouslineandthetwocombinedrepresenttheentireDeviceMarkingforthatdevice.
(6)Leadfinish/Ballmaterial-OrderableDevicesmayhavemultiplematerialfinishoptions.
Finishoptionsareseparatedbyaverticalruledline.
Leadfinish/Ballmaterialvaluesmaywraptotwolinesifthefinishvalueexceedsthemaximumcolumnwidth.
ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.
TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.
Effortsareunderwaytobetterintegrateinformationfromthirdparties.
TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.
TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.
InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis.
PACKAGEOPTIONADDENDUMwww.
ti.
com11-Dec-2020Addendum-Page2www.
ti.
comPACKAGEOUTLINEC0.
30.
20.
350.
250.
840.
10.
050.
008X0.
50.
8MAX2.
40.
12X210X0.
350.
2510X0.
30.
2A3.
12.
9B2.
11.
9(0.
2)TYP4218281/B11/2016WSON-0.
8mmmaxheightDQC0010APLASTICSMALLOUTLINE-NOLEADPIN1INDEXAREA0.
08SEATINGPLANEX0.
2)(45PIN1ID150.
1CAB0.
05C610SEEOPTIONALTERMINALDETAIL11SYMMSYMMNOTES:1.
Alllineardimensionsareinmillimeters.
Anydimensionsinparenthesisareforreferenceonly.
DimensioningandtolerancingperASMEY14.
5M.
2.
Thisdrawingissubjecttochangewithoutnotice.
3.
Thepackagethermalpadmustbesolderedtotheprintedcircuitboardforthermalandmechanicalperformance.
OPTIONALTERMINALTYPICALSCALE4.
500www.
ti.
comEXAMPLEBOARDLAYOUT10X(0.
5)8X(0.
5)(0.
84)(2.
4)(0.
2)TYPVIA(0.
95)0.
07MINALLAROUND0.
07MAXALLAROUND(1.
9)10X(0.
25)(R0.
05)TYP4218281/B11/2016WSON-0.
8mmmaxheightDQC0010APLASTICSMALLOUTLINE-NOLEADSYMMSYMM1561011LANDPATTERNEXAMPLESCALE:30XNOTES:(continued)4.
Thispackageisdesignedtobesolderedtoathermalpadontheboard.
Formoreinformation,seeTexasInstrumentsliteraturenumberSLUA271(www.
ti.
com/lit/slua271).
5.
Viasareoptionaldependingonapplication,refertodevicedatasheet.
Ifanyviasareimplemented,refertotheirlocationsshownonthisview.
Itisrecommendedthatviasunderpastebefilled,pluggedortented.
SOLDERMASKOPENINGMETALSOLDERMASKDEFINEDMETALSOLDERMASKOPENINGSOLDERMASKDETAILSNONSOLDERMASKDEFINED(PREFERRED)www.
ti.
comEXAMPLESTENCILDESIGN10X(0.
5)8X(0.
5)(1.
08)(0.
8)(1.
9)10X(0.
25)(R0.
05)TYP(0.
64)4218281/B11/2016WSON-0.
8mmmaxheightDQC0010APLASTICSMALLOUTLINE-NOLEADNOTES:(continued)6.
Lasercuttingapertureswithtrapezoidalwallsandroundedcornersmayofferbetterpasterelease.
IPC-7525mayhavealternatedesignrecommendations.
SYMMSYMMTYPMETAL1561011SOLDERPASTEEXAMPLEBASEDON0.
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