RICOH_电压比较器_欠压芯片

’98.Dec.05LOWVOLTAGEDETECTORR3111xxx1A/CSeriesRev.1.10-1-■OUTLINETheR3111SeriesarevoltagedetectorICswithhighdetectorthresholdaccuracyandultra-lowsupplycurrentbyCMOSprocess,whichcanbeoperatedatanextremelylowvoltageandisusedforsystemresetasanexample.EachoftheseICsconsistsofavoltagereferenceunit,acomparator,resistorsfordetectorthresholdsetting,anoutputdriverandahysteresiscircuit.Thedetectorthresholdisfixedwithhighaccuracyinternallyanddoesnotrequireanyadjustment.Twooutputtypes,NchopendraintypeandCMOStypeareavailable.TheR3111SeriesareoperableatalowervoltagethanthatfortheRX5VLSeries,andcanbedrivenbyasinglebattery.Fourtypesofpackages,TO-92,SOT-89,SOT-23-5andSC-82ABareavailable.■FEATURES●Ultra-lowSupplyCurrent...............................................................TYP.0.8μA(VDD=1.5V)●WideRangeofOperatingVoltage..................................................0.7to10.0V(Topt=25°C)●DetectorThreshold.........................................................................Stepwisesettingwithastepof0.1Vintherangeof0.9Vto6.0Vispossible.●HighAccuracyDetectorThreshold................................................±2.0%●LowTemperature-DriftCoefficientofDetectorThreshold............TYP.±100ppm/°C●TwoOutputTypes..........................................................................NchOpenDrainandCMOS●FourTypesofPackages..................................................................TO-92,SOT-89(Mini-powerMold),SOT-23-5(Mini-mold),SC-82AB■APPLICATIONS●CPUandLogicCircuitReset●BatteryChecker●WindowComparator●WaveShapingCircuit●BatteryBack-upCircuit●PowerFailureDetector■BLOCKDIAGRAMSR3111XXX1AR3111XXX1CVDDOUTGNDVrefVDDOUTGNDVrefRev.1.10-2-■TIMINGCHARTtPLHSupplyVoltageOutputVoltage(OUT)MinimumOperatingVoltageVSSVSSDetectorThresholdHysteresis(VDD)ReleaseVoltage+VDETDetectorThreshold-VDET■DEFINITIONOFOUTPUTDELAYTIMEOutputDelayTimetPLHisdefinedasfollows:1.InthecaseofNchOpenDrainOutput:Undertheconditionoftheoutputpin(OUT)ispulledupthrougharesistorof470kΩto5V,thetimeintervalbetweentherisingedgeofVDDpulsefrom0.7Vto(+VDET)+2.0Vandbecomingoftheoutputvoltageto2.5V.2.InthecaseofCMOSOutput:ThetimeintervalbetweentherisingedgeofVDDpulsefrom0.7Vto(+VDET)+2.0Vandbecomingoftheoutputvoltageto(VDD/2)V.+VDET+2.0V5.0V2.5V0.7VInputVoltage(VDD)OutputVoltageGNDGNDtPHLtPLH+VDET+2.0V+VDET+2.0V+VDET+2.0V0.7VInputVoltage(VDD)OutputVoltageGND2GNDtPHLtPLHNchOpenDrainOutputCMOSOutputRev.1.10-3-■SELECTIONGUIDEThepackagetype,thedetectorthreshold,theoutputtypeandthetapingtypeofR3111Seriescanbedesignatedattheusers’requestbyspecifyingthepartnumberasfollows;R3111×××1×-××←PartNumber↑↑↑↑abcdCodeContentsaDesignationofPackageType;E:TO-92Q:SC-82ABH:SOT-89N:SOT-23-5bSettingDetectorThreshold(-VDET);Stepwisesettingwithastepof0.1Vintherangeof0.9Vto6.0Vispossible.cDesignationofOutputType;A:NchOpenDrainC:CMOSdDesignationofPackingorTapingType;Ex.TO-92:TZ,SOT-89:T1,SOT-23-5,SC-82AB:TRareprescribedasstandarddirections.(RefertoTapingSpecifications.)Antistaticbagforsamples:CRev.1.10-4-■PINCONFIGURATION●TO-92●SOT-89●SOT-23-5●SC-82AB123(markside)123(markside)12354(markside)4312(markside)■PINDESCRIPTION●TO-92●SOT-89●SOT-23-5●SC-2ABPinNo.SymbolPinNo.SymbolPinNo.SymbolPinNo.Symbol1VDD1OUT1OUT1OUT2GND2VDD2VDD2VDD3OUT3GND3GND3NC4NC4GND5NC■ABSOLUTEMAXIMUMRATINGSSymbolItemRatingUnitVDDSupplyVoltage12VVOUT1OutputVoltage(CMOS)VSS-0.3toVDD+0.3VVOUT2OutputVoltage(Nch)VSS-0.3to12VIOUTOutputCurrent70mAPDPowerDissipation1*Note1300mWPDPowerDissipation2*Note2150mWToptOperatingTemperatureRange-40to85°CTstgStorageTemperatureRange-55to125°CTsolderLeadtemperature(Soldering)260°C,10s*Note1:appliedtoSOT-89andTO-92*Note2:appliedtoSOT-23-5andSC-82ABRev.1.10-5-■ELECTRICALCHARACTERISTICS●R3111x091A/CTopt=25°CSymbolItemConditionsMIN.TYP.MAX.Unit-VDETDetectorThreshold0.8820.9000.918VVHYSDetectorThresholdHysteresis0.0270.0450.063VISSSupplyCurrentVDD=0.80V2.90V0.80.92.42.7μAVDDHMaximumOperatingVoltage10VTopt=25°C0.550.70VDDLMinimumOperatingVoltage*Note1-40°C≤Topt≤85°C0.650.80VNchVDS=0.05V,VDD=0.70VVDS=0.50V,VDD=0.85V0.010.050.050.50mAIOUTOutputCurrent(DriverOutputPin)PchVDS=-2.1V,VDD=4.5V1.02.0mAtPLHOutputDelayTime*Note2100μsΔ-VDET/ΔTDetectorThresholdTemperatureCoefficient-40°C≤Topt≤85°C±100ppm/°C●R3111x181A/CTopt=25°CSymbolItemConditionsMIN.TYP.MAX.Unit-VDETDetectorThreshold1.7641.8001.836VVHYSDetectorThresholdHysteresis0.0540.0900.126VISSSupplyCurrentVDD=1.70V3.80V0.81.02.43.0μAVDDHMaximumOperatingVoltage10VTopt=25°C0.550.70VDDLMinimumOperatingVoltage*Note1-40°C≤Topt≤85°C0.650.80VNchVDS=0.05V,VDD=0.70VVDS=0.50V,VDD=0.85V0.011.000.052.00mAIOUTOutputCurrent(DriverOutputPin)PchVDS=-2.1V,VDD=4.5V1.02.0mAtPLHOutputDelayTime*Note2100μsΔ-VDET/ΔTDetectorThresholdTemperatureCoefficient-40°C≤Topt≤85°C±100ppm/°CRev.1.10-6-●R3111x271A/CTopt=25°CSymbolItemConditionsMIN.TYP.MAX.Unit-VDETDetectorThreshold2.6462.7002.754VVHYSDetectorThresholdHysteresis0.0810.1350.189VISSSupplyCurrentVDD=2.60V4.70V0.91.12.73.3μAVDDHMaximumOperatingVoltage10VTopt=25°C0.550.70VDDLMinimumOperatingVoltage*Note1-40°C≤Topt≤85°C0.650.80V