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Surface-Mount
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
‧Wide supply voltage range, 2.5V to 5.5V
‧Size : 3.2mm(L)*1.5mm(W)*1.05mm(H)
‧RoHS compliant and Pb Free package
Description
ALS-PDIC15-21C/L230/TR8 Ambient Light Sensor Device, which incorporates a photodiode and a
current amplifier IC in a single chip, is a good effective solution to the power saving of display
backlighting of mobile appliances, such as the mobile phones 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
‧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
o
C to 85oC
ALS-PDIC15-21C/L230/TR8
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Ambient Light Sensor
Package Dimensions
ALS-PDIC15-21C/L230/TR8
Unit: mm
Tolerances: ± 0.1mm
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Absolute Maximum Ratings (Ta=25℃)
ALS-PDIC15-21C/L230/TR8
Parameter Symbol Rating Unit
Supply Voltage Vcc -0.5~6.0 V
Output Voltage Vo 0 ~ Vcc-0.8 V
Output Photo Current IPH 0 ~ 5 mA
Operating Temperature Range Topr -40 ~ +85
Storage Temperature Range Tstg -40 ~ +100
T
Soldering Temperature Range [Note1]
Human Body Model ESD HBM
Machine Model ESD MM
sol
260
3000
300
℃
℃
℃
V
V
Note1: For detail reflow time and the recommended temperature profile, please refer to page 8.
Recommended Operating Conditions (Ta=25℃)
Parameter Symbol Min. Max. Unit
Operating Temperature Topr -40 +85
Supply Voltage Vcc 2.5 5.5 V
℃
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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ALS-PDIC15-21C/L230/TR8
Ambient Light Sensor
Electrical and Optical Characteristics (Ta=25℃)
Parameter Symbol Min. Typ. Max. Unit
Supply Current Icc
Dark Current ID
I
PH1
I
PH2
Light Current
I
PH3
I
PH4
Photocurrent Ratio I
Saturation Output
/ I
PH3
Vo 2.20 2.35
PH2
－
1.2*I
－ －
3.6
36
－
360
－
PH
－
－
78
－
1.2
－
100
9.5
95
－
950
－
－
μA
nA
μA
μA
μA
μA
－
V
Vcc=3V ;
Ev= 0Lux
Vcc=3V; Ev=10Lux
Vcc=3V; Ev= 100Lux
Vcc=3V; Ev= 100Lux
Vcc=3V; Ev=1000Lux
Vcc=3V; Ev= 100Lx,
RL=75KΩ
Test Condition
[Note1] [Fig.2]
[Note1] [Fig.2]
[Note2] [Fig.2]
[Fig.2]
[Note1]
[Fig.3]
Peak Sensitivity
λp
－
590
－
nm
Wavelength
Rise Time
Fall Time
tr
tf
－
－
0.356
1.11
－
－
Switching
Time
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.
Delay Time
Storage Time
td
ts
－
－
2.2
0.692
－
－
ms
ms
ms
ms
Vcc=3V,RL=27KΩ
Rankings
Rank
1
2
Test
Condition
VCC=3V;
Min
Max
36 60
50 80
Unit
uA
Ev= 100Lx
3
65 95
[Fig.4]
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Fig.1 Block Diagram
ALS-PDIC15-21C/L230/TR8
Fig.2 Measurement Method of
Light Current
Light
Source
A
LS-001
PDIC15-21C
Current
Amp
ICC
PDIC15-21C
Vcc
Vout
2. Vcc
2. Vcc
1. Vout
1. Vout
3. GND
3. GND
4. GND
4. GND
Fig.3 Measurement Method of Saturation
Output Voltage
Light
Source
ALS-001
AS-3021
PDIC15-21C
Vcc
Vout
IL
Fig.4 Switching Time Measurement Method
GND
RL
GND
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Typical Electrical and Optical Characteristics Curves
Fig.5 Light Current vs. Illuminance Fig.6 Dark Current vs. Temperature
ALS-PDIC15-21C/L230/TR8
100000
Average dark current (nA)
Average dark current vs. Temperature
10000
Vcc = 3V , Ev= 0 Lux
1000
100
10
1
0.1
0.01
1E-3
-60 -40 -20 0 20 40 60 80 100
Temperature ( )℃
Fig.7 Light current vs. Temperature Fig.8 Light current vs. Supply Voltage
1.10
Relative light current vs. Temperature
1.08
Vcc = 3V , Ev = 100 Lux
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
Relative light current
0.88
0.86
0.84
-60 -40 -20 0 20 40 60 80 100
Temperature ( )℃
1.30
Relative light current vs. Supply voltage
Ev = 100Lux
1.25
1.20
1.15
1.10
1.05
1.00
Relative light current
0.95
0.90
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply voltage (V)
Fig.9 Spectral Response Fig.10 Output voltage vs. Temperature
1.2
Ta = 25 ℃
1.0
0.8
0.6
0.4
Relative sensitivity
0.2
0.0
200 300 400 500 600 700 800 900 1000 1100
Wavelength (nm)
8
VCC = 3V
7
EV = 100 Lux
RL = 75KΩ
6
5
4
3
2
Output voltage (V)
1
0
-60 -40 -20 0 20 40 60 80 100
Temperature ( )℃
Everlight Electronics Co., Ltd. http://www.everlight.com
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ALS-PDIC15-21C/L230/TR8
Fig.11 Output Voltage vs. Illuminance
10
Ta = 25 ℃
Vcc = 3V
1
0.1
0.01
Output voltage (V)
1E-3
1E-4
1 10 100 1000 10000
Fluorence light RL = 1 KΩ
Fluorence light RL = 7.5 KΩ
Fluorence light RL = 27 KΩ
Fluorence light RL = 75 KΩ
Illuminance (Lux)
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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ALS-PDIC15-21C/L230/TR8
Converting Photocurrent to Voltage
Vcc
Current
Amp
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:
Vout(max.) = Iout(max.) × RL ≦ Vout(saturation)＝Vcc－0.8V
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)
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Ambient Light Sensor
Recommended method of storage
Reflow Terms: JEDEC Level 2 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:
z Storage temperature 10℃ to 30℃
z Storage humidity ≦60%RH max
After more than one year 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: DLS-0000009 Rev 4 December 7, 2010
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ALS-PDIC15-21C/L230/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: DLS-0000009 Rev 4 December 7, 2010
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Packing Quantity Specification
2000 PCS/ 1 Reel
Label Format
Pb
EVERLIGHT
ALS-PDIC15-21C/L230/TR8
CPN: Customer’s Production Number
P/N : Production Number
CPN :
P N : XXXXXXXXXXXXX
XXXXXXXXXXXXX
QTY : XXX
LOT NO : XXXXXXXXXX
RoHS
CAT : XXX
HUE : XXX
REF : XXX
QTY: Packing Quantity
CAT: Ranks
HUE: Peak Wavelength
REF: Reference
LOT No: Lot Number
MADE IN TAIWAN: Production Place
Reference : XXXXXXXX
Reel Dimensions
Unit: mm
Tolerance: ±0.1mm
Everlight Electronics Co., Ltd. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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Ambient Light Sensor
Tape Dimensions
ALS-PDIC15-21C/L230/TR8
Moisture Resistant Packaging
Unit: mm
Tolerance: ±0.1mm
Label Aluminum moisture-proof bag Desiccant Label
Label
Aluminum moistue-proof bag
LabelDesiccant
Everlight Electronics Co., Ltd. http://www.everlight.com
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Ambient Light Sensor
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. http://www.everlight.com
Document No: DLS-0000009 Rev 4 December 7, 2010
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