EAALSTIC2012A0 - EVERLIGHT ELECTRONICS

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Ambient Light Sensor – Surface Mount

EAALSTIC2012A0

Features

• Close responsively to the human eye spectrum

• Light to Current, analog output

• Good output linearity across wide illumination range

• Low sensitivity variation across various light sources

• Guaranteed temperature performance, -40℃ to 85℃

• Wide supply voltage range, 2.5V to 5.5V

• Size : 2.0mm(L)*1.25mm(W)*0.8mm(H)

• RoHS compliant and Pb Free package

• Compliance with EU REACH.

Description

The EAALSTIC2012A0 is a low cost ambient light sensor, consisting of phototransistor in miniature SMD. Everlight

Americas ALS series products are a good effective solution to the power saving of display backlighting of mobile

appliances, such as the mobile phones, NB and PDAs. Due to the high rejection ratio of infrared radiation, the spectral

response of the ambient light sensor is close to that of human eyes.

Applications

• Detection of ambient light to control display backlighting

Mobile devices – mobile phones, PDAs

Computing device – TFT LCD monitor for Notebook computer

Consumer device – TFT LCD TV, plasma TV, video camera, digital camera, toys

• Automatic residential and commercial management

• Automatic contrast enhancement for electronic signboard

• Ambient light monitoring device for daylight and artificial light

– Street light, CCD/CCTV

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Ambient Light Sensor – Surface Mount

EAALSTIC2012A0

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Packaging dimension

Note: Tolerances unless mentioned ±0.1mm. Unit = mm

Top View

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Absolute Maximum Ratings (Ta=25℃)

Parameter

Symbol

Rating

Unit

Supply Voltage

VCC

-0.5 ~ 6

V

Operating Temperature

Topr

-40 ~ +85

℃

Storage Temperature

Tstg

-40 ~ +100

℃

Soldering Temperature

Tsol

260 ± 10

℃

Note: For detail reflow time and the recommended temperature profile, please refer to page 8.

Recommended Operating Conditions (Ta=25℃)

Parameter

Symbol

Min.

Max.

Unit

Supply Voltage

VCC

-40

+85

℃

Operating Temperature

Topr

2.5

5.5

V

Rankings

Bin

Symbol

Min.

Max.

Unit

Test Condition

1

IPH(ON)

4

6.8

μA

VCE=5V

EV=100Lux

2

5.9

8.8

3

8

11

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Electro-Optical Characteristics (Ta=25℃)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Condition

Dark Current

ICEO

-----

0.1

μA

VCE=10V,

EV=0Lux

Collector-Emitter Saturation

Voltage

VCE(sat)

-----

0.4

V

IC=2mA,

EV=1000Lux

Light Current

IPH1

4

7.5

11

μA

VCE=5V,

EV= 100Lux

[Note1]

IPH2

90

75

110

μA

VCE=5V,

EV= 1000Lux

[Note1]

IPH3

192

360

528

μA

VCE=5V,

EV= 1000Lux

[Note2]

Photocurrent Ratio

IPH3/ IPH2

-----

4.8

-----

VCE=5V,

EV= 1000Lux

Saturation Output Voltage

VO

4.5

4.6

-----

V

VCC=5V,

EV= 1000Lx

RL=75K

[Note2]

Peak Sensitivity Wavelength

λP

-----

630

-----

nm

Sensitivity Wavelength Range

λ

390

-----

700

nm

Switching

Time

Rise Time

tr

-----

0.11

-----

mS

VCC=5V,

RL=7.5KΩ

Fall Time

tf

-----

0.22

-----

mS

Note:

1. White Fluorescent light (Color Temperature = 6500K) is used as light source. However, White LED is substituted in mass

production.

2. Illuminance by CIE standard illuminant-A / 2856K, incandescent lamp.

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Typical Electro-Optical Characteristics Curves

Fig.1 Light Current vs. Illuminance

Fig.2 Output Voltage vs. Illuminance

110 100 1000 10000

0.01

0.1

1

10

Ta=25oC; Vcc=5V

Flourescent Light

incandescent Lamp

Output Current (mA)

Illuminance Ev (Lux)

110 100 1000 10000

1E-4

1E-3

0.01

0.1

1

10

Ta=25oC ; Vcc=5V

Fluorescent light RL=1K

Fluorescent light RL=7.5K

Fluorescent light RL=75K

Ouput Voltage Vo (V)

Illuminance Ev (Lux)

Fig.3 Spectral Response

Fig.4 Light current vs. Supply Voltage

1 2 3 4 5 6 7

1

10

100

1000

10000

VCE = 5V

EV = 100 Lux

Light current (uA)

Supply voltage (V)

Fig.5 Light current vs. Temperature

Fig.6 Dark Current vs. Temperature

-60 -40 -20 020 40 60 80 100

0.01

0.1

1

10

100

1000

10000

100000

VCE = 7V

EV = 0 Lux

Dark current (nA)

Temperature (¢J)

(Typ.)

-60 -40 -20 020 40 60 80 100

1

10

100

1000

10000

VCE = 5V

EV= 100 Lux

Light current (uA)

Temperature (¢J)

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Converting Photocurrent to Voltage

RL

GND

Vout

Vcc

CL

Iph

Light

Source

Note:

1. The output voltage (Vout) is the product of photocurrent (IPH) and loading resistor (RL)

2. A right loading resistor shall be chosen to meet the requirement of maximum ambient light,

and output saturation voltage:

Vout(max.) = Iout(max.) × RL ≦ Vout(saturation)＝Vcc－0.4V

Packing Quantity Specification

4000 PCS/ 1 Reel

Label Explanation

‧CPN: Customer’s Product Number

‧P/N: Product Number

‧QTY: Packing Quantity

‧CAT: Luminous Intensity Rank

‧HUE: Dom. Wavelength Rank

‧REF: Forward Voltage Rank

‧LOT No: Lot Number

‧MADE IN TAIWAN: Production Place

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Reel Dimensions

Carrier Tape Dimensions: Loaded Quantity 4000 pcs Per Reel

Collector

Emitter

Note: Tolerances unless mentioned ±0.1mm. Unit = mm

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Recommended method of storage

Reflow Terms: JEDEC Level 4 Specification

Dry box storage is recommended as soon as the aluminum bag has been opened prevent

1. Over-current-proof

Customer must apply resistors for protection, otherwise slight voltage shift might cause big current happen.

(Burned-out might happen).

2. Storage

(1) Do not open moisture proof bag before components are ready to use.

(2) Before opening moisture proof bag, components should be kept at 30℃ or less and 90%RH or less.

(3) Components should be used within a year.

(4) After opened moisture proof bag, components should be kept at 30℃ or less and 60%RH or less.

(5) Components should be used within 72 hours after opened moisture proof bag.

(6) If the moisture absorbent material (silica gel) has faded away or the components have exceeded

the storage time, baking treatment should be performed using the following conditions.

(Baking treatment: 60±5℃ for 24 hours)

ESD Precaution:

Proper storage and handing procedures should be followed to prevent ESD damage to the devices

especially when they are removed from the anti-static bag. Electro-Static Sensitive Devices warning

labels are on the packing.

Recommended solder profile

Notice:

1. Reflow soldering should not be done more than two times.

2. When soldering, do not put stress on the devices during heating.

3. After soldering, do not warp the circuit board.

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Soldering Iron

Each terminal is to go to the tip of soldering iron temperature less than 350℃ for 3 seconds within once

in less than the soldering iron capacity 25W. Leave two seconds and more intervals, and do soldering of

each terminal. Be careful because the damage of the product is often started at the time of the hand solder.

Repairing

Repair should not be done after the device have been soldered. When repairing is unavoidable, a double-head

soldering iron should be used (as below figure). It should be confirmed beforehand whether the characteristics of the

device will or will not be damaged by repairing.

Note:

1. Above specification may be changed without notice. Everlight Americas will reserve authority on material change for above

specification.

2. When using this product, please observe the absolute maximum ratings and the instructions for using outlined in these specification

sheets. Everlight Americas assumes no responsibility for any damage resulting from use of the product which does not comply with

the absolute maximum ratings and the instructions included in these specification sheets.

3. These specification sheets include materials protected under copyright of Everlight Americas Inc. Please don’t reproduce or cause

anyone to reproduce them without Everlight Americas’s consent.