Texas Instruments LP8340 Bruksanvisning
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V
IN
1.0µF
Ceramic
V
OUT
1.0µF
Ceramic
V
OUT
GND
V
OUT
Sense
(LLP only)
V
IN
LP8340
www.ti.com
SNVS221D–FEBRUARY2003–REVISEDAPRIL2013
LP8340LowDropout,LowI
Q
,1.0ACMOSLinearRegulator
CheckforSamples:LP8340
1
FEATURES
DESCRIPTION
TheLP8340low-dropoutCMOSlinearregulatoris
2
•±1.5%TypicalV
OUT
Tolerance
availablein5V,3.3V,2.5V,1.8Vandadjustable
•420mVTypicalDropout@1.0A(V
O
=5V)
outputversions.Packagedinthe6ldWSONpackage
•WideOperatingRange2.7Vto10V
and3ldPFM.TheLP8340candeliverupto1.0A
outputcurrent.
•Internal1.0APMOSOutputTransistor
•19µATypicalQuiescentCurrent
Typicaldropoutvoltageis420mVat1.0Aforthe5.0V
version,540mVat1.0Aforthe3.3Vversion,670mV
•ThermalOverloadLimiting
at1.0Aforthe2.5Vversionand680mVat800mAfor
•FoldbackCurrentLimiting
the1.8Vversion.
•ZenerTrimmedBandgapReference
TheLP8340includesazenertrimmedbandgap
•SpaceSavingWSONpackage
voltagereference,foldbackcurrentlimitingand
•TemperatureRange
thermaloverloadlimiting.
–LP8340C0°Cto125°C
TheLP8340featuresaPMOSoutputtransistorwhich
unlikePNPtypelowdropoutregulatorsrequiresno
–LP8340I−40°Cto125°C
basedrivecurrent.Thisallowsthedeviceground
currenttoremainlessthan50µAoveroperating
APPLICATIONS
temperature,supplyvoltageandirrespectiveofthe
•HardDiskDrives
loadcurrent.
•NotebookComputers
•BatteryPoweredElectronics
•PortableInstrumentation
TypicalApplications
Figure1.FixedV
OUT
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP8340 |
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