3mm DIP
Ambient Light Sensor
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
Operating temperature performance, -40
o
C to 85
o
C
Wide supply voltage range, 2.5V to 5.5V
Size : 3mm Lamp
RoHS compliant and Pb Free package
ALS-PT204-6C/L177
‧
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
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Description
The ALS-PT204-6C/L177 is consisting of a phototransistor in 3mm lamp. EVERLIGHT ALS series
products are 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 human eyes.
Applications
Everlight Electronics Co., Ltd.
Document No: DAS-020-005 Rev1.1
1
http:\\www.everlight.com
Dec. 31, 2007
3mm DIP
Ambient Light Sensor
Package Dimensions
ALS-PT204-6C/L177
Notes:
1.All dimensions are in millimeters
2. Tolerances unless dimensions ±0.1mm
Everlight Electronics Co., Ltd.
Document No: DAS-020-005 Rev1.1
2
http:\\www.everlight.com
Dec. 31, 2007
3mm DIP
Ambient Light Sensor
ALS-PT204-6C/L177
Absolute Maximum Ratings
(Ta=25℃)
℃
Parameter
Supply Voltage
[Note1]
Symbol
V
cc
T
opr
T
stg
T
sol
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=25℃)
℃
Parameter
Operating Temperature
Supply Voltage
Symbol
T
opr
V
cc
Min.
-40
2.5
Max.
+85
5.5
Unit
°C
V
Everlight Electronics Co., Ltd.
Document No: DAS-020-005 Rev1.1
3
http:\\www.everlight.com
Dec. 31, 2007
3mm DIP
Ambient Light Sensor
ALS-PT204-6C/L177
Electrical and Optical Characteristics (Ta=25℃)
℃
Parameter
Dark Current
Collector-Emitter
Saturation Voltage
Light Current
Symbol
I
CEO
V
CE(sat)
I
PH1
I
PH2
I
PH3
Photocurrent Ratio
Saturation Output
Voltage
Peak Sensitivity
Wavelength
Sensitivity
Wavelength Range
Rise time
Fall time
Angle of half
Sensitivity
I
PH3
/ I
PH2
V
o
λ
p
λ
tr
tf
2θ
MIN.
---
---
100
1000
1800
---
4.5
---
390
---
---
---
TYP.
---
---
200
2000
0
3600
1.8
4.6
630
---
0.11
0.22
64
MA
X.
0.1
0.4
---
---
---
---
---
---
700
---
---
---
Unit
uA
V
uA
uA
uA
---
V
nm
nm
ms
ms
V
CC
= 5 V
R
L
= 7.5K
Test Condition
V
CE
=10V, E
v
= 0Lux
I
C
=2mA, E
v
= 1000Lux
V
CE
=5V, E
v
= 100Lx
[Note1]
[Note1]
V
CE
=5V, E
v
= 1000Lx
V
CE
=5V, E
v
= 1000Lx
V
CE
=5V, E
v
= 1000Lx
[Note2]
[Note2]
V
cc
=5V, E
v
= 1000Lx
R
L
=75K
Deg.
I
F
= 20 mA
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-020-005 Rev1.1
2/1
4
http:\\www.everlight.com
Dec. 31, 2007
3mm DIP
Ambient Light Sensor
ALS-PT204-6C/L177
Typical Electrical and Optical Characteristics Curves
Fig.1
100000
10000
1000
100
10
1
0.1
0.01
0.1
Light Current vs. Illuminance
Fig.2
10
Output Voltage vs. Illuminance
V
CE
= 5V
1
Ouput Voltage Vo (V)
Light current (uA)
0.1
0.01
1E-3
Ta=25 C ; Vcc=5V
Fluorescent light RL=1K
Ω
Fluorescent light RL=7.5K
Ω
Fluorescent light RL=75K
Ω
1
10
100
1000
10000
o
1
10
100
1000
10000
1E-4
Illuminance (Lux)
Illuminance Ev (Lux)
Fig.3
Spectral Response
Fig.4
Light current vs. Supply Voltage
10000
V
CE
= 5V
E
V
= 100 Lux
1000
Light current (uA)
100
10
1
1
2
3
4
5
6
7
Supply voltage (V)
Fig.5
10000
Light Current vs. Temperature
Fig.6
100000
Dark Current vs. Temperature
1000
V
CE
= 5V
E
V
= 100 Lux
10000
1000
V
CE
= 7V
E
V
= 0 Lux
Light current (uA)
Dark current (nA)
100
10
1
0.1
100
10
1
-60
-40
-20
0
20
40
60
80
100
0.01
-60
-40
-20
0
20
40
60
80
100
Everlight Electronics Co., Ltd.
Document No: DAS-020-005 Rev1.1
5
http:\\www.everlight.com
Dec. 31, 2007
℃
℃
℃
℃
℃
℃
℃
℃
Temperature (
)
Temperature (
)
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