Texas Instruments LP3881 Handleiding
Pagina's 19 Niet gecategoriseerd
Bekijk de handleiding van Texas Instruments LP3881 gratis online of download de PDF. Deze handleiding is 2 keer bekeken. Vraag over dit model? Stel een vraag
LP3881
www.ti.com
SNVS224F–MARCH2003–REVISEDAPRIL2013
LP38810.8AFast-ResponseUltraLowDropoutLinearRegulators
CheckforSamples:LP3881
1
FEATURES
DESCRIPTION
TheLP3881isahighcurrent,fastresponseregulator
2
•UltraLowDropoutVoltage(75mV@0.8ATyp)
whichcanmaintainoutputvoltageregulationwith
•LowGroundPinCurrent
minimuminputtooutputvoltagedrop.Fabricatedon
•LoadRegulationof0.04%/A
aCMOSprocess,thedeviceoperatesfromtwoinput
voltages:Vbiasprovidesvoltagetodrivethegateof
•60nATypicalQuiescentCurrentinShutdown
theN-MOSpowertransistor,whileVinistheinput
•1.5%OutputAccuracy(25°C)
voltagewhichsuppliespowertotheload.Theuseof
•TO-220,TO-263andSOIC-8Packages
anexternalbiasrailallowstheparttooperatefrom
ultralowVinvoltages.Unlikebipolarregulators,the
•OverTemperature/OverCurrentProtection
CMOSarchitectureconsumesextremelylow
•−40°Cto+125°CJunctionTemperatureRange
quiescentcurrentatanyoutputloadcurrent.Theuse
ofanN-MOSpowertransistorresultsinwide
APPLICATIONS
bandwidth,yetminimumexternalcapacitanceis
requiredtomaintainloopstability.
•DSPPowerSupplies
•ServerCoreandI/OSupplies
Thefasttransientresponseofthesedevicesmakes
themsuitableforuseinpoweringDSP,
•PCAdd-in-Cards
MicrocontrollerCorevoltagesandSwitchMode
•LocalRegulatorsinSet-TopBoxes
PowerSupplypostregulators.Thepartsareavailable
•MicrocontrollerPowerSupplies
inTO-220,TO-263andSOIC-8packages.
•HighEfficiencyPowerSupplies
DropoutVoltage:75mV(typ)@0.8Aloadcurrent.
•SMPSPost-Regulators
GroundPinCurrent:3mA(typ)atfullload.
ShutdownCurrent:60nA(typ)whenS/Dpinislow.
PrecisionOutputVoltage:1.5%roomtemperature
accuracy.
TYPICALAPPLICATIONCIRCUIT
Atleast4.7µFofinputandoutputcapacitanceisrequiredforstability.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP3881 |
Heb je hulp nodig?
Als je hulp nodig hebt met Texas Instruments LP3881 stel dan hieronder een vraag en andere gebruikers zullen je antwoorden