Texas Instruments LP3981 Handleiding

Bekijk gratis de handleiding van Texas Instruments LP3981 (26 pagina’s), behorend tot de categorie Niet gecategoriseerd. Deze gids werd als nuttig beoordeeld door 3 mensen en kreeg gemiddeld 4.5 sterren uit 6 reviews. Heb je een vraag over Texas Instruments LP3981 of wil je andere gebruikers van dit product iets vragen? Stel een vraag

IN

BYPASS

LP3981

2.2 µF

EN

OUT-SENSE

OUT

2(2)

7(6)

1(1)

4(3)

6(5)

5(4)

2.2 µF

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

Reference

Design

LP3981

SNVS159H–OCTOBER2001–REVISEDJULY2015

LP3981Micropower,300-mAUltra-Low-DropoutCMOSVoltageRegulator

1Features3Description

PerformanceoftheLP3981deviceisoptimizedfor

1

•2.5-Vto6-VInputRange

battery-poweredsystemstodeliverultra-low-noise,

•300-mAOutputCurrent

extremelylowdropoutvoltage,andlowquiescent

•60-dBPSRRat1kHz

current.Regulatorgroundcurrentincreasesonly

slightlyindropout,furtherprolongingthebatterylife.

•≤1-μAQuiescentCurrentWhenShutDown

•FastTurnonTime:120μs(typical)withC

BYPASS

=

Powersupplyrejectionisbetterthan60dBatlow

0.01µF

frequencies.Thishighpowersupplyrejectionis

maintaineddowntolowerinputvoltagelevels

•132-mVTypicalDropoutwith300-mALoad

commontobattery-operatedcircuits.

•35-μVrmsOutputNoiseOver10Hzto100kHz

Thedeviceisidealformobilephoneandsimilar

•LogicControlledEnable

battery-poweredwirelessapplications.Itprovidesup

•StableWithCeramicandHigh-QualityTantalum

to300mA,froma2.5-Vto6-Vinput,consumingless

Capacitors

than1µAindisablemode.

•ThermalShutdownandShort-CircuitCurrentLimit

TheLP3981isavailablein8-pinVSSOP-8and6-pin

•LowThermalResistanceinWSON-6Package

WSONpackages.Performanceisspecifiedfor−40°C

GivesExcellentPowerCapability

to+125°Ctemperaturerange.Thedeviceavailablein

thefollowingoutputvoltages:2.5V,2.7V,2.8V,

2.83V,3V,3.03Vand3.3Vasstandard.Other

2Applications

outputoptionscanbemadeavailable;contactyour

•CDMACellularHandsets

localTIsalesofficeformoreinformation.

•WidebandCDMACellularHandsets

DeviceInformation

(1)

•GSMCellularHandsets

PARTNUMBERPACKAGEBODYSIZE(NOM)

•PortableInformationAppliances

WSON(6)4.00mmx3.00mm

LP3981

VSSOP(8)3.00mmx3.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplicationCircuit

Note:PinnumbersinparenthesisindicateWSONpackage.

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties