Texas Instruments LP3856-ADJ Handleiding
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LP3856-ADJ
V
IN
V
OUT
ADJ
GND
*C
IN
*C
OUT
INPUT
OUTPUT
3A
R1**
R2**
C
FF
**
**
V
OUT
= 1.216 x (1+
R1
R2
)
SDSD
10 PF
10 PF
* TANTALUM OR
CERAMIC
LP3856-ADJ
www.ti.com
SNVS243E–SEPTEMBER2003–REVISEDAPRIL2013
LP3856-ADJ3AFastResponseUltraLowDropoutLinearRegulators
CheckforSamples:LP3856-ADJ
1
FEATURES
DESCRIPTION
TheLP3856-ADJfastultralow-dropoutlinear
2
•UltraLowDropoutVoltage
regulatorsoperatefroma+2.5Vto+7.0Vinput
•StablewithSelectedCeramicCapacitors
supply.Theseultralowdropoutlinearregulators
•LowGroundPinCurrent
respondveryquicklytostepchangesinload,which
makesthemsuitableforlowvoltagemicroprocessor
•LoadRegulationof0.08%
applications.TheLP3856-ADJisdevelopedona
•10nAQuiescentCurrentinShutdownMode
CMOSprocesswhichallowslowquiescentcurrent
•SpecifiedOutputCurrentof3ADC
operationindependentofoutputloadcurrent.This
CMOSprocessalsoallowstheLP3856-ADJto
•AvailableinDDPAK/TO-263andTO-220
operateunderextremelylowdropoutconditions.
Packages
•Overtemperature/OvercurrentProtection
DropoutVoltage:Ultralowdropoutvoltage;typically
39mVat300mAloadcurrentand390mVat3Aload
•−40°Cto+125°CJunctionTemperatureRange
current.
APPLICATIONS
GroundPinCurrent:Typically4mAat3Aload
current.
•MicroprocessorPowerSupplies
ShutdownMode:Typically10nAquiescentcurrent
•GTL,GTL+,BTL,andSSTLBusTerminators
whentheshutdownpinispulledlow.
•PowerSuppliesforDSPs
AdjustableOutputVoltage:Theoutputvoltagemay
•SCSITerminator
beprogrammedviatwoexternalresistors.
•PostRegulators
•HighEfficiencyLinearRegulators
•BatteryChargers
•OtherBatteryPoweredApplications
TYPICALAPPLICATIONCIRCUIT
**SeeApplicationHints
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP3856-ADJ |
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