Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
1
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/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
‧
Operating temperature performance, -40
o
C to 85
o
C
‧
Wide supply voltage range, 1.8V to 5.5V
‧
Size : 2.0mm(L)*1.25mm(W)*0.8mm(H)
‧
RoHS compliant and Pb Free package
Description
The ALS-PDIC17-55C/TR8 is consisting of a photodiode and a current amplification IC.
EVERLIGHT ALS series product is 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
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
2
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Package Dimensions
1
2
3
4
2
1
4
3
1
2
3
4
Unit: mm
Tolerances: ± 0.1mm
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
3
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Absolute Maximum Ratings (Ta=25°C)
Parameter Symbol Rating Unit
Supply Voltage V
cc
-0.5~6.0 V
Output Voltage V
o
0 ~ Vcc-0.8 V
Output Photo Current I
PH
0 ~ 5 mA
Operating Temperature Range T
opr
-40 ~ +85 °C
Storage Temperature Range T
stg
-40 ~ +100 °C
Soldering Temperature Range
[Note1]
T
sol
260 °C
Human Body Model ESD HBM 3000 V
Machine Model ESD MM 300 V
Note1:
For detail reflow time and the recommended temperature profile, please refer to page 8.
Recommended Operating Conditions (Ta=25°C)
Parameter Symbol Min. Max. Unit
Operating Temperature T
opr
-40 +85 °C
Supply Voltage V
cc
1.8 5.5 V
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Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
4
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Electrical and Optical Characteristics (Ta=25°C)
Parameter Symbol
Min.
Typ.
Max.
Unit Test Condition
Supply Current I
cc
－ 1.2*I
PH
－ µA
Dark Current I
D
－ － 100 nA V
cc
=3V or 5.5V;
E
v
= 0Lux
I
PH1
－ 5 － µA V
cc
=3V; E
v
=10Lux
[Note1] [Fig.2]
I
PH2
－ 50 － µA V
cc
=3V; E
v
= 100Lux
[Note1] [Fig.2]
I
PH3
－ 60 － µA V
cc
=3V; E
v
= 100Lux
[Note2] [Fig.2]
Light Current
I
PH4
－ 500 － µA V
cc
=3V; E
v
=1000Lux
[Note1] [Fig.2]
Photocurrent Ratio I
PH3
/ I
PH2
－ 1.2 － －
Saturation Output
Voltage V
o
2.20
2.35
－ V V
cc
=3V; E
v
= 100Lx,
R
L
=150KΩ
[Fig.3]
Peak Sensitivity
Wavelength λ
p
－ 590 － nm
Sensitivity Wavelength
Range λ 390
--- 700 nm
Rise Time
t
r
－ 0.36
－ ms
Fall Time
t
f
－ 1.13
－ ms
Delay Time
t
d
－ 2.30
－ ms
Switching
Time
Storage Time
t
s
－ 0.69
－ ms
V
cc
=3V,R
L
=27KΩ
[Fig.4]
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. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
5
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
6
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
PDIC15-21C
Fig.1 Block Diagram
Fig.2 Measurement Method of
Light Current
Fig.3 Measurement Method of
Saturation Output Voltage
ALS-001
Light
Source
GND
Vout
I
L
Vcc
I
CC
ALS-001
Light
Source
GND
Vout
Vcc
R
L
Fig.4 Switching Time Measurement Method
AS-3021
PDIC17-55C PDIC17-55C
2. V
cc
1. V
out
3. GND
4. GND
2. Vcc
1. Vout
3. GND
4. GND
Current
Amp
PDIC17-55C
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Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
7
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Typical Electrical and Optical Characteristics Curves
Fig.5 Light Current vs. Illuminance Fig.6 Dark Current vs. Temperature
Fig.7 Light current vs. Temperature Fig.8 Light current vs. Supply Voltage
-60 -40 -20 0 20 40 60 80 100
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
V
CE
= 3V
E
V
= 100 Lux
Relative light current
Temperature ( )
℃
℃℃
℃
Fig.9 Spectral Response Fig.10 Output voltage vs. Temperature
-60 -40 -20 0 20 40 60 80 100
0.1
1
10
100
R
L
= 7.5kΩ
E
V
= 1000 Lux
Output voltage (V)
Temperature ( )
℃
℃℃
℃
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Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
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Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Fig.11 Supply Current vs. Illuminance Fig.12 Output Voltage vs. Illuminance
0.1 1 10 100 1000 10000
0.01
0.1
1
10
100
1000
10000
V
CC
= 3V
T
a
= 25
℃
℃℃
℃
Supply current (uA)
Illuminance (Lux)
1 10 100 1000 10000
1E-4
1E-3
0.01
0.1
1
10
T
a
= 25
℃
℃℃
℃
Vcc = 3V
Fluorence light R
L
= 75 KΩ
Fluorence light R
L
= 27 KΩ
Fluorence light R
L
= 7.5 KΩ
Fluorence light R
L
= 1 KΩ
Output voltage (V)
Illuminance (Lux)
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
9
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
R
L
GND
Vout
Vcc
Amp
Current
C
L
I
ph
Converting Photocurrent to Voltage
Note:
1. The output voltage (V
out
) is the product of photocurrent (I
PH
) and loading resistor (R
L
)
2. A right loading resistor shall be chosen to meet the requirement of maximum ambient light,
and output saturation voltage:
V
out
(max.)
=
I
out
(max.) ×
R
L
≦
V
out(saturation)
＝
V
cc
－
0.8V
3. To avoid 60Hz ripple from fluorescent lamps, we suggest that the time constant must be
greater than 0.5 second:
R
L
×
C
L
≧
0.5
(empirical data)
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
10
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
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
moisture absorption. The following conditions should be observed, if dry boxes are not
available:
Storage temperature 10
℃
to 30
℃
Storage humidity
≦
60%RH max
After more than 72 hours under these conditions moisture content will be too high for
reflow soldering. In case of moisture absorption, the devices will recover to former
condition by drying under the following condition:
192 hours at 40
℃
+5
℃
/-0
℃
and 5%RH (dry air / nitrogen), or
96 hours at 60
℃
+5
℃
and < 5%RH for all device containers, or
24 hours at 125
℃
+5
℃
not suitable for reel or tubes
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.
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
11
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
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. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
12
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
xxxxxx
xxxxxx
xxxxxxxxxxxx
xxxx
xxxxxxxx
RoHS
Packing Quantity Specification
3000 PCS/ 1 Reel
Label Format
Reel Dimensions
Unit: mm
Tolerance: ±0.1mm
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
13
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/TR8
Tape Dimensions
Moisture Resistant Packaging
Aluminum moistue-proof bag LabelDesiccant
Label
Unit: mm
Tolerance: ±0.1mm
Label Aluminum moisture-proof bag Desiccant Label
1
Vcc
Out
2
GND
3
GND
4
Everlight Electronics Co., Ltd. http:\\www.everlight.com
Document No: DAS-017-004 Rev2.1 Jan. 25, 2008
14
Surface - Mount
Ambient Light Sensor
ALS-PDIC17-55C/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.
