Texas Instruments LM74610-Q1 Handleiding

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VIN

Q1

D

VOUT

S

G

LM74610-Q1

Vcap

Gate DriveGate Pull Down

Anode

V

CAP

HV

CAP

L

Cathode

Voltage

Regulator

Source

Vbatt

LM74610-Q1

Drain

C

Vcap

TVS+

Vout

TVS-

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LM74610-Q1

SNOSCZ1B–JULY2015–REVISEDJUNE2016

LM74610-Q1ZeroIQReversePolarityProtectionSmartDiodeController

1

1Features

1

•QualifiedforAutomotiveApplications

•AEC-Q100QualifiedWiththeFollowingResults:

–ExceedsHBMESDClassificationLevel2

–DeviceCDMESDClassificationLevelC4B

•Maximumreversevoltageof45V

•NoPositiveVoltagelimitationtoAnodeTerminal

•ChargePumpGateDriverforExternalN-Channel

MOSFET

•LowerPowerDissipationthanSchottky

Diode/PFETSolutions

•LowReverseLeakageCurrent

•ZeroIQ

•Fast2-µsResponsetoReversePolarity

•-40°Cto+125°COperatingAmbientTemperature

•CanbeUsedinOR-ingApplications

•MeetsCISPR25EMISpecification

•MeetsAutomotiveISO7637Transient

RequirementswithaSuitableTVSDiode

•NoPeakCurrentLimit

2Applications

•ADAS

•InfotainmentSystems

•PowerTools(Industrial)

•TransmissionControlUnit(TCU)

•BatteryOR-ingApplications

3Description

TheLM74610-Q1isacontrollerdevicethatcanbe

usedwithanN-ChannelMOSFETinareverse

polarityprotectioncircuitry.Itisdesignedtodrivean

externalMOSFETtoemulateanidealdioderectifier

whenconnectedinserieswithapowersource.A

uniqueadvantageofthisschemeisthatitisnot

referencedtogroundandthushasZeroIq.

TheLM74610-Q1controllerprovidesagatedrivefor

anexternalN-ChannelMOSFETandafastresponse

internalcomparatortodischargetheMOSFETGate

intheeventofreversepolarity.Thisfastpull-down

featurelimitstheamountanddurationofreverse

currentflowifoppositepolarityissensed.Thedevice

designalsomeetsCISPR25Class5EMI

specificationsandautomotiveISO7637transient

requirementswithasuitableTVSdiode.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LM74610-Q1VSSOP(8)3.00mmx5.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

SmartDiodeConfigurationApplicationDiagram

Product specificaties