Texas Instruments LP38798 Handleiding

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP38798

SNOSCT6F–MARCH2013–REVISEDJANUARY2017

LP38798800-mAUltra-Low-Noise,High-PSRRLDO

1

1Features

1

•WideOperatingInputVoltageRange:

3Vto20V

•Ultra-LowOutputNoise:5µV

RMS

(10Hzto100kHz)

•HighPSRR:90dBat10kHz,60dBat100kHz

•±1%OutputVoltageInitialAccuracy(T

J

=25°C)

•VeryLowDropout:200mV(Typical)at800mA

•StablewithCeramicorTantalumOutput

Capacitors

•ExcellentLineandLoadTransientResponse

•CurrentLimitandOvertemperatureProtection

•CreateaCustomDesignUsingtheLP38798With

theWEBENCH

®

PowerDesigner

2Applications

•RFPowerSupplies:PLLs,VCOs,Mixers,LNAs

•TelecomInfrastructure

•WirelessInfrastructure

•VeryLow-NoiseInstrumentation

•PrecisionPowerSupplies

•High-Speed,High-PrecisionDataConverters

3Description

TheLP38798-ADJisahigh-performance,low-noise

LDOthatcansupplyupto800mAoutputcurrent.

Designedtomeettherequirementsofsensitive

RF/Analogcircuitry,theLP38798-ADJimplementsa

novellineartopologyonanadvancedCMOSprocess

todeliverultra-lowoutputnoiseandhighPSRRat

switchingpowersupplyfrequencies.The

LP38798SD-ADJisstablewithbothceramicand

tantalumoutputcapacitorsandrequiresaminimum

outputcapacitanceofonly1µFforstability.

TheLP38798-ADJcanoperateoverawideinput

voltagerange(3Vto20V)makingitwellsuitedfor

manypost-regulationapplications.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP38798WSON(12)4.00mm×4.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

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