Texas Instruments LM22675-Q1 Handleiding

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LM22675

,

LM22675-Q1

SNVS591L–SEPTEMBER2008–REVISEDNOVEMBER2014

LM22675/-Q142V,1ASIMPLESWITCHER

®

Step-DownVoltageRegulator

withFeatures

1Features3Description

TheLM22675switchingregulatorprovidesallofthe

1

•WideInputVoltageRange:4.5Vto42V

functionsnecessarytoimplementanefficienthigh

•InternallyCompensatedVoltageModeControl

voltagestep-down(buck)regulatorusingaminimum

•StablewithLowESRCeramicCapacitors

ofexternalcomponents.Thiseasytouseregulator

incorporatesa42VN-channelMOSFETswitch

•200mΩN-ChannelMOSFET

capableofprovidingupto1Aofloadcurrent.

•OutputVoltageOptions:

Excellentlineandloadregulationalongwithhigh

-ADJ(OutputsasLowas1.285V)

efficiency(>90%)arefeatured.Voltagemodecontrol

-5.0(OutputFixedto5V)

offersshortminimumon-time,allowingthewidest

•±1.5%FeedbackReferenceAccuracy

ratiobetweeninputandoutputvoltages.Internalloop

compensationmeansthattheuserisfreefromthe

•SwitchingFrequencyof500kHz

tedioustaskofcalculatingtheloopcompensation

•–40°Cto125°COperatingJunctionTemperature

components.Fixed5Voutputandadjustableoutput

Range

voltageoptionsareavailable.Aswitchingfrequency

•PrecisionEnablePin

of500kHzallowsforsmallexternalcomponentsand

goodtransientresponse.Aprecisionenableinput

•IntegratedBoot-StrapDiode

allowssimplificationofregulatorcontrolandsystem

•IntegratedSoft-Start

powersequencing.Inshutdownmodetheregulator

•FullyWEBENCH

®

Enabled

drawsonly25µA(typ).Builtinsoft-start(500µs,typ)

savesexternalcomponents.TheLM22675alsohas

•Step-DownandInvertingBuck-BoostApplications

builtinthermalshutdown,andcurrentlimitingto

•LM22675QisanAutomotiveGradeProduct

protectagainstaccidentaloverloads.

thatisAEC-Q100Grade1Qualified(–40°Cto

+125°COperatingJunctionTemperature)

TheLM22675isamemberofTexasInstruments'

SIMPLESWITCHER

®

family.TheSIMPLE

•SOPowerPAD-8(ExposedPad)Package

SWITCHERconceptprovidesforaneasytouse

completedesignusingaminimumnumberofexternal

2Applications

componentsandtheTIWEBENCHdesigntool.TI's

•IndustrialControl

WEBENCHtoolincludesfeaturessuchasexternal

componentcalculation,electricalsimulation,thermal

•TelecomandDatacomSystems

simulation,andBuild-Itboardsforeasydesign-in.

•EmbeddedSystems

•ConversionsfromStandard24V,12Vand5V

DeviceInformation

(1)

InputRails

PARTNUMBERPACKAGEBODYSIZE(NOM)

LM22675

HSOP(8)4.89mmx3.90mm

LM22675-Q1

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

SimplifiedApplicationSchematic

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties