Texas Instruments LP3986 Bruksanvisning

Läs gratis den bruksanvisning för Texas Instruments LP3986 (18 sidor) i kategorin ej kategoriserat. Guiden har ansetts hjälpsam av 14 personer. Har du en fråga om Texas Instruments LP3986 eller vill du ställa frågor till andra användare av produkten? Ställ en fråga

LP3986

www.ti.com

SNVS142U–AUGUST2001–REVISEDFEBRUARY2013

LP3986DualMicropower150mAUltraLow-DropoutCMOSVoltageRegulatorsinDSBGA

Package

CheckforSamples:LP3986

1

FEATURES

DESCRIPTION

TheLP3986isa150mAduallowdropoutregulator

2

•Miniature8-I/ODSBGAPackage

designedforportableandwirelessapplicationswith

•StableWith1µFCeramicandHighQuality

demandingperformanceandboardspace

TantalumOutputCapacitors

requirements.

•FastTurn-on

TheLP3986isstablewithasmall1µF±30%

•TwoIndependentRegulators

ceramicoutputcapacitorrequiringsmallestpossible

boardspace.

•LogicControlledEnable

•OverCurrentandThermalProtection

TheLP3986'sperformanceisoptimizedforbattery

poweredsystemstodeliverultralownoise,extremely

APPLICATIONS

lowdropoutvoltageandlowquiescentcurrent

independentofloadcurrent.Regulatorgroundcurrent

•CDMACellularHandsets

increasesveryslightlyindropout,furtherprolonging

•GSMCellularHandsets

thebatterylife.Optionalexternalbypasscapacitor

reducestheoutputnoisefurtherwithoutslowingdown

•PortableInformationAppliances

theloadtransientresponse.Faststart-uptimeis

•PortableBatteryApplications

achievedbyutilizingaspeed-upcircuitthatactively

pre-chargesthebypasscapacitor.Powersupply

rejectionisbetterthan60dBatlowfrequenciesand

55dBat10kHz.Highpowersupplyrejectionis

maintainedatlowinputvoltagelevelscommonto

batteryoperatedcircuits.

TheLP3986isavailableinaDSBGApackage.

Performanceisspecifiedfora−40°Cto+125°C

temperaturerange.ForsingleLDOapplications,

pleaserefertotheLP3985datasheet.

Table1.KeySpecifications

VALUEUNIT

Guaranteedoutputcurrentperregulator150mA

Typicalquiescentcurrentwhenbothregulatorsinshutdownmode1nA

Typicaldropoutvoltageat150mAoutputcurrent60mV

Typicalgroundcurrent115µA

Typicaloutputnoise40µV

Fastturn-oncircuit200µs

Junctiontemperature−40to+125°C

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2001–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer