Texas Instruments LP38869 Handleiding
Pagina's 27 Niet gecategoriseerd
Bekijk de handleiding van Texas Instruments LP38869 gratis online of download de PDF. Deze handleiding is 3 keer bekeken. Vraag over dit model? Stel een vraag
1 PF
ON-
OFF-
V
OUT
1 PF
LP38869
OUT
OUT
OUT
OUT
SET
GND
IN
IN
IN
IN
SS
SHDN
RST
DAP
RESET
V
IN
C
SS
LP38869
www.ti.com
SNVS877B–AUGUST2012–REVISEDAPRIL2013
LP388691AFlexCap,Low-DropoutLinearRegulatorwith0.75%Accuracy
CheckforSamples:LP38869
1
FEATURES
DESCRIPTION
TheLP38869low-dropoutlinearregulatoroperates
2
•OperatingInputSupplyRange:+2.7Vto+5.5V
withaninputvoltagesupplyfrom+2.7Vto+5.5V
•MaximumContinuousOutputCurrent:1A
input,anddeliversaspecified1Aloadcurrentwitha
•PresetOutputVoltageof2.5V,orAdjustable
low200mVdropout.Thehigh50dBPSRRat100
OutputVoltageFrom0.8Vto5.0V
kHzresultsfromahighgaincontrolloopthatalso
yieldsexcellenttransientresponse.Coupledwitha
•Pre-SetOutputInitialV
OUT
Tolerance±0.5%
highaccuracyoutputvoltage,±0.75%over
•AdjustableV
REF
Toleranceof±0.75%
temperature,theLP38869isanidealpowersupply
•PSRRof50dBat100kHz
forFPGAs,DSPsorMCUs.Outputvoltageispreset
at+2.5V,ormaybeadjustablebetween+0.8Vto+5V
•Low200mVDropoutat1A
withanexternalresistordivider.
•Typical2µASupplyCurrentinShutdown
TheLP38869onlyneeds1μFoutputcapacitancefor
Mode
stability.TheFlexCapcompensationallowstheuseof
•AdjustableSoft-StartforOutputCurrent
anytypeofoutputcapacitor,regardlessofESR.
•Fold-BackOutputCurrentLimit
Otherfeaturesinclude:Soft-Start;delayedreset
•StableWithCeramic,Tantalum,orAluminum
output;low-powershutdown;short-circuitprotection;
andthermalshutdownprotection
Capacitors
•StableWith1uFInput/OutputCapacitors
GroundPinCurrent:Typicallylessthan1mAat1A
load
•ThermalShutdown
•16-pinHTSSOPPackage
ShutdownMode:Typically2µAquiescentcurrent
whentheSHDNpinispulledlow.
APPLICATIONS
SimplifiedCompensation:Stablewithanytypeof
outputcapacitor.
•DSA,FPGAandMCUPowerSupply
•SMPSPost-Regulator
•ApplicationsRequiringSequencing
•GibabitSERDESTerminationSupply
TypicalApplicationCircuit
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2012–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP38869 |
Heb je hulp nodig?
Als je hulp nodig hebt met Texas Instruments LP38869 stel dan hieronder een vraag en andere gebruikers zullen je antwoorden