Texas Instruments LM3410-Q1 Handleiding

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VIN

SW

2

1

3

5

4

DIM

V

IN

C

1

DIMM

GND

LEDs

LM3410

L

1

D

1

R

1

C

2

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LM3410

,

LM3410-Q1

SNVS541H–OCTOBER2007–REVISEDAUGUST2016

LM3410,LM3410-Q1525-kHzand1.6-MHz,Constant-CurrentBoostandSEPICLEDDriver

WithInternalCompensation

1

1Features

1

•QualifiedforAutomotiveApplications

•AEC-Q100TestGuidanceWiththeFollowing:

–DeviceTemperatureGrade1:–40°Cto125°C

AmbientOperatingTemperatureRange

–DeviceHBMESDClassificationLevel2

–DeviceCDMESDClassificationLevelC6

•Space-SavingSOT-23andWSONPackages

•InputVoltageFrom2.7Vto5.5V

•OutputVoltageFrom3Vto24V

•2.8-A(Typical)SwitchCurrentLimit

•HighSwitchingFrequency

–525KHz(LM3410Y)

–1.6MHz(LM3410X)

•170-mΩNMOSSwitch

•190-mVInternalVoltageReference

•InternalSoftStart

•Current-Mode,PWMOperation

•ThermalShutdown

2Applications

•LEDBacklightCurrentSources

•LiIonBacklightOLEDandHBLEDDrivers

•HandheldDevices

•LEDFlashDrivers

•AutomotiveApplications

3Description

TheLM3410andLM3410-Q1constantcurrentLED

driverareamonolithic,highfrequency,PWMDC-DC

converter,availablein6-pinWSON,8-pinMSOP-

PowerPad™,and5-pinSOT-23packages.Witha

minimumofexternalcomponentstheLM3410and

LM3410-Q1areeasytouse.Itcandrive2.8-A

(typical)peakcurrentswithaninternal170-mΩ

NMOSswitch.Switchingfrequencyisinternallysetto

either525kHzor1.6MHz,allowingtheuseof

extremelysmallsurfacemountinductorsandchip

capacitors.Eventhoughtheoperatingfrequencyis

high,efficienciesupto88%areeasytoachieve.

Externalshutdownisincluded,featuringanultra-low

standbycurrentof80nA.TheLM3410andLM3410-

Q1usecurrent-modecontrolandinternal

compensationtoprovidehigh-performanceovera

widerangeofoperatingconditions.Additional

featuresincludePWMdimming,cycle-by-cycle

currentlimit,andthermalshutdown.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LM3410,

LM3410Q

WSON(6)3.00mm×3.00mm

MSOP-PowerPAD(8)2.90mm×1.60mm

SOT-23(5)3.00mm×3.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalBoostApplicationCircuitTypicalEfficiency(LM3410X)

Product specificaties