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1Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
www.ev
erlightamericas.com
Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
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 : 1.7mm(L)*0.8mm(W)*0.6mm(H)
• RoHS compliant and Pb Free package
• Compliance with EU REACH.
Description
The EAALSTIC1708A0 is a low cost ambient light sensor, consisting of phototransistor in mini
ature 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
re
sponse 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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DATASHEET
Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
2Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
.everlightamericas.com
Packaging dimension
Collector
Emitter
Collector Mark
Note: Tolerances unless mentioned ±0.1mm. Unit = mm
Top View
Bottom View
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DATASHEET
Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
3Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
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Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply Voltage VCC -0.5 ~ 6.0 V
Operating Temperature Topr -40 ~ +85 ℃
Storage Temperature Tstg -40 ~ +100 ℃
Soldering Temperature [Note] Tsol 260 ± 10 ℃
Note: For detail reflow time and the recommended temperature profile, please refer to page 8.
Recommend
ed Operating Conditions
Parameter Symbol Min. Max. Unit
Supply Voltage VCC -40 +85 ℃
Operating Temperature Topr 2.5 5.5 V
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 5 15 ----- μAVCE=5V, EV= 100Lux
[Note1]
IPH2 50 150 ----- μAVCE=5V, EV=1000Lux
[Note1]
IPH3 140 520 ----- μAVCE=5V,EV= 1000Lux
[Note2]
Photo-current Ratio IPH3/ IPH2 ----- 3.5 ----- ----- VCC=5V,EV= 1000Lux
Saturation Output Voltage VO4.5 4.6 ----- V
VCE=5V,EV= 1000Lx,
RL=75K
[Note2]
Peak Sensitivity Wavelength λP----- 630 ----- nm
Sensitivity Wavelength Range λ390 ----- 700 nm
Switching
Time
Rise Time tr----- 0.11 ----- mS VCE=5V,RL=7.5KΩ
Fall Time tf----- 0.12 ----- mS
Note:
1. White Fluorescent light (Color Temperature = 6500K) is used as light source. However, White LED is substituted in mass
production.
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Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
4Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
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2. Illuminance by CIE standard illuminant-A / 2856K, incandescent lamp.
Typical Electro
-
Optical Characteristics Curves
Fig.
1
Light Current vs. Illuminance
Fig.
2
Output Voltage vs. Illuminance
Fig.3 Spectral Response Fig.4 Light current vs. Supply Voltage
300 400 500 600 700 800 900
0
20
40
60
80
100 Spectral Response (Typ.)
Relative Sensitivity (%)
Wavelength (nm)
Fig.
5
Light current vs. Temperature
Fig.
6
Dark Current vs. Temperature
-40 -20 0 20 40 60 80 100
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3 Ev = 100 Lux
Relative light current
Temperature ( )℃
0 100 200 300 400 500 600 700 800 90010001100
0
50
100
150
200
250
Light current vs. Illuminance
Light current (uA)
illuminance (Lux)
(Typ.)
(Typ.)(Typ.)
(Typ.)(Typ.)
(Typ.)
2.0 2.5 3.0 3.5 4.0 4.5
0.96
0.97
0.98
0.99
1.00
1.01
1.02
1.03
1.04 Ev = 100 Lux
Relative light current
Vcc (V)
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Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
5Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
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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
3. To avoid 60Hz ripple from fluorescent lamps, we suggest that the time constant must be
greater than 0.5 second:
RL× CL≧0.5 (empirical data)
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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Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
6Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
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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
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).
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Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
7Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
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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
70%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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Ambient Light Sensor – Surface Mount
EAALSTIC1708A0
8Copyright © 2014, Everlight Americas Inc. All Rights Reserved. Release Date : 12.17.2014.
Issue No: DLS-0000131 Rev.1
.everlightamericas.com
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.