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首页 经典的电池保护芯片_DW01

经典的电池保护芯片_DW01.pdf

经典的电池保护芯片_DW01

疯狼
2011-03-04 0人阅读 举报 0 0 暂无简介

简介:本文档为《经典的电池保护芯片_DW01pdf》,可适用于IT/计算机领域

DWPlusOneCellLithiumionPolymerBatteryProtectionICGGeenneerraallDDeessccrriippttiioonnOOrrddeerriinnggIInnffoorrmmaattiioonnDWTheDWPlusbatteryprotectionICisdesignedtoprotectlithiumionpolymerbatteryfromdamageordegradingthelifetimeduetoovercharge,overdischarge,andorovercurrentforonecelllithiumionpolymerbatterypoweredsystems,suchascellularphonesPACKAGETYPESOTTEMPERATURERANGE°C~°CTheultrasmallpackageandlessrequiredexternalcomponentsmakeitidealtointegratetheDWPlusintothelimitedspaceofbatterypackTheaccurate±mVoverchargingdetectionvoltageensuressafeandfullutilizationchargingTheverylowstandbycurrentdrainslittlecurrentfromthecellwhileinstorageOVERCHARGEPROTECTIONV±mVFFeeaattuurreessAApppplliiccaattiioonnsszReductioninBoardSizeduetoMiniaturePackageSOTzProtectionICforOneCellLithiumIonLithiumPolymerBatteryPackzUltraLowQuiescentCurrentatμA(Vcc=V)zUltraLowPowerDownCurrentatμA(Vcc=V)zPrecisionOverchargeProtectionVoltageV±mVfortheDWPluszLoadDetectionFunctionduringOverchargeModezTwoDetectionLevelsforOvercurrentProtectionzDelaytimesaregeneratedbyinternalcircuitsNoexternalcapacitorsrequiredFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICPPrroodduuccttNNaammeeLLiissttPackageModelSOTOverchargedetectionvoltageVOCP(V)OverchargereleasevoltageVOCR(V)OverdischargedetectionvoltageVODP(V)OverdischargereleasevoltageVODR(V)OvercurrentdetectionvoltageVOI(mV)DWPlusDW±±±±±PPiinnCCoonnffiigguurraattiioonnSOTTOPVIEWPinNoSymbolDescriptionODMOSFETgateconnectionpinfordischargecontrolCSInputpinforcurrentsense,chargerdetectOCMOSFETgateconnectionpinforchargecontrolTDTestpinforreducedelaytimeVCCPowersupply,througharesistor(R)GNDGroundpinFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICFFuunnccttiioonnaallBBlloocckkDDiiaaggrraammVSSOCVSSVSSVSSVCCGNDCSChargerDetectorODControlLogicShortcircuitDetectorOvercurrentDetectorOscillatorControlCircuitOverchargeDetectorOverdischargeDetectorDividerControlLogicTDVSSTTyyppiiccaallAApppplliiccaattiioonnCCiirrccuuiittDWPlusOCODGNDCSBATTMMRkΩRΩVCCBATTTDCμFFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICAAbbssoolluutteeMMaaxxiimmuummRRaattiinnggss(VSS=V,Ta=°Cunlessotherwisespecified)ItemSymbolRatingUnitInputvoltagebetweenVDDandVSS*VDDVSStoVSSVOCoutputpinvoltageVOCVDDtoVDDVODoutputpinvoltageVODVSStoVDDVCSinputpinvoltageVCSVDDtoVDDVOperatingTemperatureRangeTOPto°CStorageTemperatureRangeTSTto°CNote:DWPluscontainsacircuitthatwillprotectitfromstaticdischargebutpleasetakespecialcarethatnoexcessivestaticelectricityorvoltagewhichexceedsthelimitoftheprotectioncircuitwillbeappliedtoitFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICEElleeccttrriiccaallCChhaarraacctteerriissttiiccss(Ta=°Cunlessotherwisespecified)PARAMETERTESTCONDITIONSSYMBOLMinTypMaxUNITSupplyCurrentVCC=VICCμAPowerDownCurrentVCC=VIPDμAOverchargeProtectionVoltageDWPlusVOCPVOverchargeReleaseVoltageVOCRVOverdischargeProtectionVoltageVODPVOverdischargeReleaseVoltageVODRVOvercurrentProtectionVoltageVOIP(VOI)mVShortCurrentProtectionVoltageVCC=VVSIP(VOI)VOverchargeDelayTimeTOCmsOverdischargeDelayTimeVCC=VtoVTODmsOvercurrentDelayTime()VCC=VTOImsOvercurrentDelayTime()VCC=VTOIμsChargerDetectionThresholdVoltageVCHVODPinOutput“H”VoltageVDHVCCVCCVODPinOutput“L”VoltageVDLVOCPinOutput“H”VoltageVCHVCCVCCVOCPinOutput“L”VoltageVCLVFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICDDeessccrriippttiioonnooffOOppeerraattiioonnOverchargeProtectionWhenthevoltageofthebatterycellexceedstheoverchargeprotectionvoltage(VOCP)beyondtheoverchargedelaytime(TOC)period,chargingisinhibitedbyturningoffofthechargecontrolMOSFETTheoverchargeconditionisreleasedintwocases:)Thevoltageofthebatterycellbecomeslowerthantheoverchargereleasevoltage(VOCR)throughselfdischarge)Thevoltageofthebatterycellfallsbelowtheoverchargeprotectionvoltage(VOCP)andaloadisconnectedWhenthebatteryvoltageisaboveVOCP,theoverchargeconditionwillnotreleaseevenaloadisconnectedtothepackOverdischargeProtectionWhenthevoltageofthebatterycellgoesbelowtheoverdischargeprotectionvoltage(VODP)beyondtheoverdischargedelaytime(TOD)period,dischargingisinhibitedbyturningoffthedischargecontrolMOSFETThedefaultofoverdischargedelaytimeismsInhibitionofdischargingisimmediatelyreleasedwhenthevoltageofthebatterycellbecomeshigherthanoverdischargereleasevoltage(VODR)throughchargingOvercurrentProtectionInnormalmode,theDWPluscontinuouslymonitorsthedischargecurrentbysensingthevoltageofCSpinIfthevoltageofCSpinexceedstheovercurrentprotectionvoltage(VOIP)beyondtheovercurrentdelaytime(TOI)period,theovercurrentprotectioncircuitoperatesanddischargingisinhibitedbyturningoffthedischargecontrolMOSFETTheovercurrentconditionreturnstothenormalmodewhentheloadisreleasedortheimpedancebetweenBATTandBATTislargerthankΩTheDWPlusprovidestwoovercurrentdetectionlevels(VandV)withtwoovercurrentdelaytime(TOIandTOI)correspondingtoeachovercurrentdetectionlevelChargeDetectionafterOverdischargeWhenoverdischargeoccurs,thedischargecontrolMOSFETturnsoffanddischargingisinhibitedHowever,chargingisstillpermittedthroughtheparasiticdiodeofMOSFETOncethechargerisconnectedtothebatterypack,theDWPlusimmediatelyturnsonallthetiminggenerationanddetectioncircuitryChargingprogressissensedifthevoltagebetweenCSandGNDisbelowchargedetectionthresholdvoltage(VCH)PowerDownafterOverdischargeWhenoverdischargeoccurs,theDWPluswillenterintopowerdownmode,turningoffallthetiminggenerationanddetectioncircuitrytoreducethequiescentcurrenttoμA(VCC=V)Atthesametime,theCSpinispulluptoVCCthroughaninternalresistorFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICDDeessiiggnnGGuuiiddeeSelectionofExternalControlMOSFETBecausetheovercurrentprotectionvoltageispreset,thethresholdcurrentforovercurrentdetectionisdeterminedbytheturnonresistanceofthechargeanddischargecontrolMOSFETsTheturnonresistanceoftheexternalcontrolMOSFETscanbedeterminedbytheequation:RON=VOIP(xIT)(ITistheovercurrentthresholdcurrent)Forexample,iftheovercurrentthresholdcurrentITisdesignedtobeA,theturnonresistanceoftheexternalcontrolMOSFETmustbemΩBeawarethatturnonresistanceoftheMOSFETchangeswithtemperaturevariationduetoheatdissipationItchangeswiththevoltagebetweengateandsourceaswell(TurnonresistanceofMOSFETincreasesasthevoltagebetweengateandsourcedecreases)AstheturnonresistanceoftheexternalMOSFETchanges,thedesignoftheovercurrentthresholdcurrentchangesaccordinglySuppressingtheRippleandDisturbancefromChargerTosuppresstherippleanddisturbancefromcharger,connectingRandCtoVCCisrecommendedProtectiontheCSpinRisusedforlatchupprotectionwhenchargerisconnectedunderoverdischargeconditionandoverstressprotectionatreverseconnectingofachargerFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICTTiimmiinnggDDiiaaggrraammOverchargeConditionÆLoadDischargingÆNormalConditionVOCPVOCRVODRVODPChargerLoadVCCCSVCCGNDVCCGNDBatteryVoltageOCPinODPinCSPinTOCTOCVOIVCHFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICOverdischargeConditionÆChargingbyaChargerÆNormalConditionVOCPVOCRVODRVODPChargerLoadVCCCSVCCGNDVCCGNDBatteryVoltageOCPinODPinCSPinTODTODVCHVOIFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICOverCurrentConditionÆNormalConditionVOCPVOCRVODRVODPChargerLoadVCCCSVCCGNDVCCVOIBatteryVoltageOCPinODPinCSPinTOITOIGNDVOIFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:DWPlusOneCellLithiumionPolymerBatteryProtectionICFortuneSemiconductorCoTEL:TDRevhttp:wwwfsccomtwFAX:PPaacckkaaggeeOOuuttlliinneeeebEDEθθAAALLθGAUGEPLANESEATINGPLANEDETAILAcDETAILASYMBOLMINTYPMAXAAAbcDEEeeLLθθBSCBSCREFUnit:mmbbθGeneralDescriptionFeaturesOrderingInformationApplicationsProductNameListPinConfigurationFunctionalBlockDiagramTypicalApplicationCircuitAbsoluteMaximumRatingsElectricalCharacteristicsDescriptionofOperationDesignGuideTimingDiagramOverchargeCondition(LoadDischarging(NormalConditionOverdischargeCondition(ChargingbyaCharger(NormalConditionOverCurrentCondition(NormalConditionPackageOutline

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经典的电池保护芯片_DW01

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