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Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
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, -40oC to 85oC 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
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, 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

Description
The ALS-PT19-315C/L177/TR8 is consisting of phototransistor in miniature SMD. EVERLIGHT ALS series product 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
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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http:\\www.everlight.com Jan. 25, 2008
Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Package Dimensions
Top View
Bottom View
Unit: mm Tolerances: 0.1mm
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Absolute Maximum Ratings (Ta=25C) Parameter Supply Voltage
[Note1]
Symbol Vcc Topr Tstg Tsol
Rating -0.5~6.0 -40 ~ +85 -40 ~ +100 260 10
Unit V C C C
Operating Temperature Range Storage Temperature Range Soldering Temperature Range [Note1]
Note1: For detail reflow time and the recommended temperature profile, please refer to page 8.
Recommended Operating Conditions (Ta=25C) Parameter Operating Temperature Supply Voltage Symbol Topr Vcc Min. -40 2.5 Max. +85 5.5 Unit C V
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Electrical and Optical Characteristics (Ta=25C) Parameter Dark Current Collector-Emitter Saturation Voltage Symbol MIN. ICEO VCE(sat) IPH1 Light Current IPH2 IPH3 Photocurrent Ratio Saturation Output Voltage Peak Sensitivity Wavelength Sensitivity Wavelength Range Rise time Fall time IPH3 / IPH2 Vo p tr tf ----7 200 950 --4.5 --390 ----TYP. ----10 230 1100 4.8 4.6 630 --0.11 0.22 MAX. 0.1 0.4 ------------700 ----Unit uA V uA uA uA --V nm nm ms VCC = 5 V RL = 7.5K ms Test Condition VCE=10V, Ev= 0Lux IC=2mA, Ev= 1000Lux VCE=5V, Ev= 100Lx
[Note1] [Note1]
VCE=5V, Ev= 1000Lx VCE=5V, Ev= 1000Lx VCE=5V, Ev= 1000Lx
[Note2]
Vcc=5V, Ev= 1000Lx [Note2] RL=75K
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.
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Typical Electrical and Optical Characteristics Curves
Fig.1
10
Light Current vs. Illuminance
Fig.2
10
Output Voltage vs. Illuminance
Ta=25 C; Vcc=5V Flourescent Light incandescent Lamp
o
1
Output Current (mA)
Ouput Voltage Vo (V)
1
0.1
0.1
0.01
1E-3
0.01
Ta=25 C ; Vcc=5V Fluorescent light RL=1K Fluorescent light RL=7.5K Fluorescent light RL=75K 1 10 100 1000 10000
o
1E-4
1 10 100 1000 10000
Illuminance Ev (Lux)
Illuminance Ev (Lux)
Fig.3
100
Spectral Response
Spectral Response (Typ.)
Fig.4
Light current vs. Supply Voltage
1 .0 4 1 .0 3 1 .0 2
Ev = 100 Lux
80
Relative Sensitivity (%)
60
Relative light current
400 500 600 700 800 900
1 .0 1 1 .0 0 0 .9 9 0 .9 8 0 .9 7
40
20
0 300
0 .9 6
Wavelength (nm)
2.0
2.5
3 .0
3 .5
4 .0
4.5
V c c (V )
Fig.5
1.3
Light Current vs. Temperature
Fig.6
(LED) Light Current vs. Illuminance
250
Ev = 100 Lux
1.2
Light current vs. Illuminance
Light current (uA)
200 150 100 50 0
Relative light current
1.1 1.0 0.9 0.8 0.7 0.6 -40 -20 0 20 40 60 80 100
0
100 200 300 400 500 600 700 800 900 10001100
illuminance (Lux)
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0

Temperature (
)
5
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Surface - Mount Ambient Light Sensor
Converting Photocurrent to Voltage
ALS-PT19-315C/L177/TR8
Vcc
Light Source
Iph
Vout
RL CL
GND
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:
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
Vout(max.) = Iout(max.) x RL
Vout(saturation)Vcc0.4V
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Surface - Mount Ambient Light Sensor
Recommended method of storage
Reflow Terms: JEDEC Level 4 Specification
ALS-PT19-315C/L177/TR8
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 70%RH or less. (5) Components should be used within 168 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: 605 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.
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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Surface - Mount Ambient Light Sensor
Recommended Solder Profile
ALS-PT19-315C/L177/TR8
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.
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.
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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http:\\www.everlight.com Jan. 25, 2008
Surface - Mount Ambient Light Sensor
Packing Quantity Specification 3000 PCS/ 1 Reel
ALS-PT19-315C/L177/TR8
Label Format
xxxxxx xxxxxx
RoHS
xxxxxxxxxxxx xxxx xxxxxxxx
Reel Dimensions
Unit: mm Tolerance: 0.1mm
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
9
http:\\www.everlight.com Jan. 25, 2008
Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Tape Dimensions
Unit: mm Tolerance: 0.1mm
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
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Surface - Mount Ambient Light Sensor
ALS-PT19-315C/L177/TR8
Note:
1. Above specification may be changed without notice. EVERLIGHT 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 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 corporation. Please don't reproduce or cause anyone to reproduce them without EVERLIGHT's consent.
Everlight Electronics Co., Ltd. Document No: DAS-019-002 Rev2.0
11
http:\\www.everlight.com Jan. 25, 2008

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