Texas Instruments LP3996 Bruksanvisning

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LP3996

V

IN

EN1

EN2

C

BYP

SET

POR

V

OUT1

V

OUT2

1 PF1 PF

1 PF

V

IN

EN1

EN2

V

OUT1

V

OUT2

POR

470 k:

GND

10 nF

Sets delay

for POR

LP3996

www.ti.com

SNVS360D–NOVEMBER2006–REVISEDOCTOBER2013

LP3996DualLinearRegulatorwith300mAand150mAOutputsandPower-On-Reset

CheckforSamples:LP3996

1

FEATURES

APPLICATIONS

2

•2LDOOutputswithIndependentEnable

•CellularHandsets

•1.5%AccuracyatRoomTemperature,3%Over•PDAs

Temperature

•WirelessNetworkAdaptors

•Power-On-ResetFunctionwithAdjustable

DelayDESCRIPTION

TheLP3996isaduallowdropoutregulatorwith

•ThermalShutdownProtection

power-on-resetcircuit.Thefirstregulatorcansource

•StablewithCeramicCapacitors

150mA,whilethesecondiscapableofsourcing300

mAandhasapower-on-resetfunctionincluded.

KEYSPECIFICATIONS

TheLP3996provides1.5%accuracyrequiringan

•InputVoltageRange2.0Vto6.0V

ultralowquiescentcurrentof35µA.Separateenable

•LowDropoutVoltage210mVat300mA

pinsalloweachoutputoftheLP3996tobeshut

down,drawingvirtuallyzerocurrent.

•Ultra-LowI

Q

(Enabled)35µA

•VirtuallyZeroI

Q

(Disabled)<10nA

TheLP3996isdesignedtobestablewithsmall

footprintceramiccapacitorsdownto1µF.An

•PackageAvailableinLead-FreeOption

externalcapacitormaybeusedtosetthePORdelay

10-pin3mmx3mm

timeasrequired.

TheLP3996isavailableinfixedoutputvoltagesand

comesina10-pin,3mmx3mmpackage.

TypicalApplicationCircuit

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2006–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer