Texas Instruments LMZ22003 Handleiding

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0123

40

50

60

70

80

90

100

EFFICIENCY (%)

OUTPUT CURRENT (A)

9 VIn

12 Vin

20 Vin

V

IN

C

IN

22 PF

Enable

R

FBT

See Table

C

SS

0.47 PF

R

FBB

See Table

Co

220 PF

LMZ22003

VOUT

SS/TRK

SYNC

FB

VIN

EN

PGND

V

OUT

@ 3A

AGND

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMZ22003

SNVS658I–MARCH2011–REVISEDAUGUST2015

LMZ220033-ASIMPLESWITCHER

®

PowerModuleWith20-VMaximumInputVoltage

1Features2Applications

1

•IntegratedShieldedInductor

•Point-of-loadConversionsfrom12-VInputRail

•SimplePCBLayout•Time-CriticalProjects

•FrequencySynchronizationInput(650kHzto950•SpaceConstrainedandHighThermal

kHz)RequirementApplications

•FlexibleStart-upSequencingUsingExternalSoft-•NegativeOutputVoltageApplications

Start,TrackingandPrecisionEnable(SeeAN-2027SNVA425)

•ProtectionAgainstInrushCurrentsandFaults

3Description

suchasInputUVLOandOutputShortCircuit

TheLMZ22003SIMPLESWITCHER

®

powermodule

•JunctionTemperatureRange–40°Cto125°C

isaneasy-to-usestep-downDC-DCsolutioncapable

•SingleExposedPadandStandardPinoutforEasy

ofdrivingupto3-Aload.TheLMZ22003isavailable

MountingandManufacturing

inaninnovativepackagethatenhancesthermal

•FastTransientResponseforPoweringFPGAs

performanceandallowsforhandormachine

soldering.

andASICs

•FullyEnabledforWEBENCH

®

PowerDesigner

TheLMZ22003canacceptaninputvoltagerail

between6Vand20Vandcandeliveranadjustable

•PinCompatibleWith

andhighlyaccurateoutputvoltageaslowas0.8V.

LMZ23605/LMZ23603/LMZ22005

TheLMZ22003onlyrequirestwoexternalresistors

•ElectricalSpecifications

andthreeexternalcapacitorstocompletethepower

–18-WMaximumTotalOutputPower

solution.TheLMZ22003isareliableandrobust

designwiththefollowingprotectionfeatures:thermal

–Upto3-AOutputCurrent

shutdown,programmableinputundervoltagelockout,

–InputVoltageRange6Vto20V

outputovervoltageprotection,shortcircuitprotection,

–OutputVoltageRange0.8Vto6V

outputcurrentlimit,andthisdeviceallowsstart-up

intoaprebiasedoutput.Thesyncinputallows

–Efficiencyupto92%

synchronizationoverthe650-to950-kHzswitching

•PerformanceBenefits

frequencyrange.

–HighEfficiencyReducesSystemHeat

Generation

DeviceInformation

(1)(2)

–TestedToEN55022ClassB

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

–LowComponentCount,Only5External

LMZ22003NDW(7)10.16mm×9.85mm

Components

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

–LowOutputVoltageRipple

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

–UsesPCBasHeatSink,NoAirflowRequired

moredetails.

NOTE:EN55022:2006,+A1:2007,FCCPart15SubpartB:2007.

SeeAN-2125SNVA473andlayoutforinformationon

deviceundertest.Vin=12V,Vo=3.3V,Io=3A

SimplifiedApplicationSchematicEfficiency5-VOutputat25°CAmbient

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties