S-8261_精工电池保护板IC资料.pdf

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1、Rev.1.9_00BATTERYPROTECTIONICFORSINGLE-CELLPACKS-8261SeriesTheS-8261seriesarelithium-ion/lithiumpolymerrechargeablebatteryprotectionICsincorporatinghigh-accuracyvoltagedetectioncircuitanddelaycircuit.TheS-8261seriesaresuitableforprotectionofsingle-celllithiumion/lithiumpolymerbatterypacksfromover

2、charge,overdischargeandovercurrent.¢Features(1)Internalhighaccuracyvoltagedetectioncircuit•Overchargedetectionvoltage3.9Vto4.4V(applicablein5mVstep)Accuracy:±25mV(+25°C)and±30mV(−5°Cto+55°C)*1•Overchargehysteresisvoltage0.0Vto0.4VAccuracy:±25mVTheoverchargehysteresisvoltagecanbeselectedfromtheran

3、ge0.0Vto0.4Vin50mVstep.•Overdischargedetectionvoltage2.0Vto3.0V(applicablein10mVstep)Accuracy:±50mV*2•Overdischargehysteresisvoltage0.0Vto0.7VAccuracy:±50mVTheoverdischargehysteresisvoltagecanbeselectedfromtherange0.0Vto0.7Vin100mVstep.•Overcurrent1detectionvoltage0.05Vto0.3V(applicablein10mVstep

4、)Accuracy:±15mV•Overcurrent2detectionvoltage0.5V(fixed)Accuracy:±100mV(2)Highvoltagedeviceisusedforchargerconnectionpins(VMandCOpins:absolutemaximumrating=28V)(3)Delaytimes(overcharge:tCU,overdischarge:tDL,overcurrent1:tlOV1,overcurrent2:tlOV2)aregeneratedbyaninternalcircuit.Noexternalcapacitoris

5、necessary.Accuracy:±20%(4)Three-stepovercurrentdetectioncircuitisincluded.(overcurrent1,overcurrent2andloadshort-circuiting)(5)0Vbatterychargefunction“available”/“unavailable”areselectable.(6)Chargerdetectionfunctionandabnormalchargecurrentdetectionfunction•Theoverdischargehysteresisisreleasedbyd

6、etectingnegativevoltageattheVMpin(−0.7Vtyp.).(Chargerdetectionfunction)•WhentheoutputvoltageoftheDOpinishighandthevoltageattheVMpinisequaltoorlowerthanthechargerdetectionvoltage(−0.7Vtyp.),theoutputvoltageoftheCOpingoeslow.(Abnormalchargecurrentdetectionfunction)(7)Lowcurrentconsumption•Operation

7、mode3.5µAtyp.,7.0µAmax.•Power-downmode0.1µAmax.(8)Wideoperatingtemperaturerange−40°Cto+85°C(9)SmallpackageSOT-23-6,6-PinSNB(B)*1.Overchargereleasevoltage=Overchargedetectionvoltage−Overchargehysteresisvoltage(whereover