Texas Instruments LM9070 Handleiding

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LM9070

www.ti.com

SNVS130E–DECEMBER1999–REVISEDAPRIL2013

LM9070Low-DropoutSystemVoltageRegulatorwithKeep-AliveON/OFFControl

CheckforSamples:LM9070

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FEATURES

DESCRIPTION

TheLM9070isa5V,3%accurate,250mAlow-

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•AutomotiveApplicationReliability

dropoutvoltageregulator.Theregulatorfeaturesan

•3%OutputVoltageTolerance

activelowdelayedresetoutputflagwhichcanbe

•InsensitivetoRadiatedRFI

usedtoresetamicroprocessorsystemonturn-ON

andintheeventthattheregulatoroutputfallsoutof

•DropoutVoltageLessthan800mVwith250

regulationforanyreason.Anexternalcapacitor

mAOutputCurrent

programsadelaytimeintervalbeforetheresetoutput

•ExternallyProgrammedResetDelayInterval

canreturnhigh.

•Keep-AliveFeaturewith2LogicControlInputs

DesignedforautomotiveapplicationtheLM9070

•60VLoadDumpTransientProtection

containsavarietyofprotectionfeaturessuchas

•ThermalShutdown

reversebattery,over-voltageshutdown,thermal

shutdown,inputtransientprotectionandawide

•ShortCircuitProtectionandDisableSafety

operatingtemperaturerange.

Features

Auniquetwo-inputlogiccontrolschemeisusedto

•ReverseBatteryProtection

enableordisabletheregulatoroutput.AnON/OFF

•LowOFFQuiescentCurrent,50μAMaximum

inputcanbeprovidedbyanignitionswitchderived

•WideOperatingTemperatureRange−40°Cto

signalwhileasecond,Keep-Aliveinput,isgenerated

+125°C

byasystemcontroller.Thisallowsforasystemto

remainONafterignitionhasbeenswitchedOFF.The

•TO-263and20-PinPowerSurfaceMount

systemcontrollercanthenexecuteapower-down

Packages

routineandafterwhichcommandtheregulatorOFF

•LeadFormCompatiblewithTLE4267TO-220

toalowquiescentcurrentstate(60μAmax).

Regulator

Designtechniqueshavebeenemployedtoallowthe

regulatortoremainoperationalandnotgeneratefalse

resetsignalswhensubjectedtohighlevelsofRF

energy(300V/mfrom2MHzto400MHz).

ConnectionDiagramsandOrderingInformation

Backsidemetalisinternallyconnectedtoground.

Figure1.7LeadTO-263(TopView)Figure2.20-PinSOICPackage

PackageNumberKTW0007B

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©1999–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties