环境光传感器

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

Features

Closeresponsivelytothehumaneyespectrum

LighttoCurrent,analogoutput

Goodoutputlinearityacrosswideilluminationrange

Lowsensitivityvariationacrossvariouslightsources

Guaranteedtemperatureperformance,-40oCto85oC

Widesupplyvoltagerange,2.5Vto5.5VSize:1.7mm(L)*0.8mm(W)*0.6mm(H)RoHScompliantandPbFreepackage

Description

TheALS-PT19-315C/L177/TR8isconsistingofphototransistorinminiatureSMD.EVERLIGHT

ALSseriesproductareagoodeffectivesolutiontothepowersavingofdisplaybacklightingof

mobileappliances,suchasthemobilephones,NBandPDAs.Duetothehighrejectionratioof

infraredradiation,thespectralresponseoftheambientlightsensorisclosetothatofhuman

eyes.

Applications

‧Detectionofambientlighttocontroldisplaybacklighting

Mobiledevices–mobilephones,PDAs

Computingdevice–TFTLCDmonitorforNotebookcomputerConsumerdevice–TFTLCDTV,videocamera,digitalcamera,toys

Automaticresidentialandcommercialmanagement

Automaticcontrastenhancementforelectronicsignboard

Ambientlightmonitoringdevicefordaylightandartificiallight

–Streetlight,CCD/CCTV

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DocumentNo:DAS-019-002Rev2.01Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

PackageDimensions

TopView

BottomView

Unit:mm

Tolerances:±0.1mm

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DocumentNo:DAS-019-002Rev2.02Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

AbsoluteMaximumRatings(Ta=25°C)

ParameterSymbolRatingUnit

SupplyVoltageVcc-0.5~6.0V

OperatingTemperatureRangeTopr-40~+85°C

StorageTemperatureRangeTstg-40~+100°C

SolderingTemperatureRange[Note1]Tsol260±10°C

Note1:Fordetailreflowtimeandtherecommendedtemperatureprofile,pleaserefertopage8.

RecommendedOperatingConditions(Ta=25°C)

ParameterSymbolMin.Max.Unit

OperatingTemperatureTopr-40+85°C

SupplyVoltageVcc2.55.5V

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DocumentNo:DAS-019-002Rev2.03Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

ElectricalandOpticalCharacteristics(Ta=25°C)

ParameterSymbolMIN.TYP.MAX.UnitTestCondition

DarkCurrentICEO0.1uAVCE=10V,Ev=0Lux

Collector-Emitter

SaturationVoltage

VCE(sat)0.4VIC=2mA,Ev=1000Lux

IPH1710uAVCE=5V,Ev=100Lx

[Note1]

LightCurrent

IPH2200230uA

VCE=5V,Ev=1000Lx

[Note1]

IPH39501100uA

VCE=5V,Ev=1000Lx

[Note2]

PhotocurrentRatioIPH3/IPH24.8V

CE=5V,Ev=1000Lx

SaturationOutput

Voltage

Vo4.54.6V

Vcc=5V,Ev=1000Lx

[Note2]

RL=75K

PeakSensitivity

Wavelength

λp630nm

SensitivityWavelength

Range

λ390700nm

ms

Risetime0.11tr

ms

Falltime0.22tf

VCC=5V

RL=7.5KΩ

Note:

1.WhiteFluorescentlight(ColorTemperature=6500K)isusedaslightsource.However,WhiteLEDis

substitutedinmassproduction.

2.IlluminancebyCIEstandardilluminant-A/2856K,incandescentlamp.

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DocumentNo:DAS-019-002Rev2.04Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

TypicalElectricalandOpticalCharacteristicsCurves

Fig.1LightCurrentvs.IlluminanceFig.2OutputVoltagevs.Illuminance

1010

Ta=25

oC;Vcc=5V

FlourescentLight

incandescentLamp

1

1

0.1

0.1

0.01

Ta=25

oC;Vcc=5V

1E-3FluorescentlightRL=1KΩ

0.01

FluorescentlightRL=7.5KΩ

FluorescentlightRL=75KΩ

110100100010000

1E-4

110100100010000

IlluminanceEv(Lux)

IlluminanceEv(Lux)

Fig.3SpectralResponseFig.4Lightcurrentvs.SupplyVoltage

100

SpectralResponse(Typ.)

1.04

Ev=100Lux1.03

80

1.02

60

1.01

1.00

40

0.99

200.98

0.97

0

300400500600700800900

Wavelength(nm)λ

0.96

2.02.53.03.54.04.5

Vcc(V)

Fig.5LightCurrentvs.TemperatureFig.6(LED)LightCurrentvs.Illuminance

2501.3

Ev=100Lux

Lightcurrentvs.Illuminance

1.2200

1.1

1501.0

1000.9

0.8

50

0.7

0.6

-40-20020406080100

0

010020030040050060070080090010001100

illuminance(Lux)

Temperature()

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DocumentNo:DAS-019-002Rev2.05Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

ConvertingPhotocurrenttoVoltage

Vcc

LightSource

Iph

Vout

RLCL

GND

Note:

1.Theoutputvoltage(Vout)istheproductofphotocurrent(IPH)andloadingresistor(RL)

2.Arightloadingresistorshallbechosentomeettherequirementofmaximumambientlight,

andoutputsaturationvoltage:

Vout(max.)=Iout(max.)×RLVout(saturation)Vcc0.4V

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DocumentNo:DAS-019-002Rev2.06Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

Recommendedmethodofstorage

ReflowTerms:JEDECLevel4Specification

Dryboxstorageisrecommendedassoonasthealuminumbaghasbeenopenedprevent

1.Over-current-proof

Customermustapplyresistorsforprotection,otherwiseslightvoltageshiftmightcause

bigcurrenthappen.(Burned-outmighthappen).

2.Storage

(1)Donotopenmoistureproofbagbeforecomponentsarereadytouse.

(2)Beforeopeningmoistureproofbag,componentsshouldbekeptat30orlessand

90%RHorless.

(3)Componentsshouldbeusedwithinayear.

(4)Afteropenedmoistureproofbag,componentsshouldbekeptat30orlessand

70%RHorless.

(5)Componentsshouldbeusedwithin168hoursafteropenedmoistureproofbag.

(6)Ifthemoistureabsorbentmaterial(silicagel)hasfadedawayorthecomponents

haveexceededthestoragetime,bakingtreatmentshouldbeperformedusingthe

followingconditions.(Bakingtreatment:60±5for24hours)

ESDPrecaution:

ProperstorageandhandingproceduresshouldbefollowedtopreventESDdamageto

thedevicesespeciallywhentheyareremovedfromtheAnti-staticbag.Electro-Static

SensitiveDeviceswarninglabelsareonthepacking.

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DocumentNo:DAS-019-002Rev2.07Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

RecommendedSolderProfile

Notice:

(1)Reflowsolderingshouldnotbedonemorethantwotimes.

(2)Whensoldering,donotputstressonthedevicesduringheating.

(3)Aftersoldering,donotwarpthecircuitboard.

SolderingIron

Eachterminalistogotothetipofsolderingirontemperaturelessthan350for3

secondswithinonceinlessthanthesolderingironcapacity25W.Leavetwosecondsand

moreintervals,anddosolderingofeachterminal.Becarefulbecausethedamageofthe

productisoftenstartedatthetimeofthehandsolder.

Repairing

Repairshouldnotbedoneafterthedevicehavebeensoldered.Whenrepairingis

unavoidable,adouble-headsolderingironshouldbeused(asbelowfigure).Itshouldbe

confirmedbeforehandwhetherthecharacteristicsofthedevicewillorwillnotbe

damagedbyrepairing.

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DocumentNo:DAS-019-002Rev2.08Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

PackingQuantitySpecification

3000PCS/1Reel

LabelFormat

xxxxxx

xxxxxx

RoHS

xxxxxxxxxxxx

xxxx

xxxxxxxx

ReelDimensions

Unit:mm

Tolerance:±0.1mm

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DocumentNo:DAS-019-002Rev2.09Jan.25,2008

ALS-PT19-315C/L177/TR8Surface-Mount

AmbientLightSensor

TapeDimensions

Unit:mm

Tolerance:±0.1mm

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DocumentNo:DAS-019-002R