Texas Instruments LMZ12002 Handleiding

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EFFICIENCY (%)

50

55

60

65

70

75

80

85

90

95

100

0

0.4

0.81.21.62

OUTPUT CURRENT (A)

25°C

1.8

1.2

1.5

V

IN

C

IN

10 PF

Enable

R

ON

See Table

R

FBT

C

FF

0.022 PF

See Table

C

SS

0.022 PF

R

FBB

See Table

100 PF

LMZ12002

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

@ 2A

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMZ12002

SNVS650H–JANUARY2010–REVISEDAUGUST2015

LMZ120022-ASIMPLESWITCHER

®

PowerModuleWith20-VMaximumInputVoltage

1Features2Applications

1

•IntegratedShieldedInductor

•Point-of-loadConversionsfrom5-Vand12-V

InputRail

•SimplePCBLayout

•Time-CriticalProjects

•FlexibleStart-upSequencingUsingExternalSoft-

StartCapacitorandPrecisionEnable•Space-ConstrainedHighThermalRequirement

Applications

•ProtectionAgainstInrushCurrentsandFaults

SuchasInputUVLOandOutputShortCircuit•NegativeOutputVoltageApplications

(SeeAN-2027SNVA425)

•JunctionTemperatureRange–40°Cto125°C

•SingleExposedPadandStandardPinoutforEasy

3Description

MountingandManufacturing

TheLMZ12002SIMPLESWITCHER

®

powermodule

•FastTransientResponseforFPGAsandASICs

isaneasy-to-usestep-downDC-DCsolutioncapable

•LowOutputVoltageRipple

ofdrivingupto2-Aloadwithexceptionalpower

conversionefficiency,lineandloadregulation,and

•Pin-to-PinCompatibleWithFamilyDevices:

outputaccuracy.TheLMZ12002isavailableinan

–LMZ14203/2/1(42-VMaximum3A,2A,1A)

innovativepackagethatenhancesthermal

–LMZ12003/2/1(20-VMaximum3A,2A,1A)

performanceandallowsforhandormachine

•FullyWEBENCH

®

PowerDesignerEnabled

soldering.

•PerformanceBenefits

TheLMZ12002canacceptaninputvoltagerail

between4.5Vand20V,andcandeliveran

–12-WMaximumTotalPowerOutput

adjustableandhighlyaccurateoutputvoltageaslow

–Upto2-AOutputCurrent

as0.8V.TheLMZ12002onlyrequiresthreeexternal

–InputVoltageRange4.5Vto20V

resistorsandfourexternalcapacitorstocompletethe

–OutputVoltageRange0.8Vto6V

powersolution.TheLMZ12002isareliableand

robustdesignwiththefollowingprotectionfeatures:

–Efficiencyupto92%

thermalshutdown,inputundervoltagelockout,output

•ElectricalSpecifications

overvoltageprotection,shortcircuitprotection,output

–OperatesatHighAmbientTemperatureWith

currentlimit,andthedeviceallowsstart-upintoa

NoThermalDerating

prebiasedoutput.Asingleresistoradjuststhe

switchingfrequencyupto1MHz.

–HighEfficiencyReducesSystemHeat

Generation

DeviceInformation

(1)(2)

–LowRadiatedEmissions(EMI)Testedto

PARTNUMBERPACKAGEBODYSIZE(NOM)

EN55022ClassBStandard

LMZ12002NDW(7)9.85mm×10.16mm

–LowExternalComponentCount

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

moredetails.

SimplifiedApplicationSchematicEfficiency5-VInputat25°C

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties