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Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/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, -40oC to 85oC Wide supply voltage range, 2.5V to 5.5V Size : 3.2mm(L)*1.5mm(W)*1.1mm(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, 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

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
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
1
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Package Dimensions
ALS-PDIC15-21C/L230/TR8
Top View
Sensor Window
3
1
4
2
R0.35
1 2 3 4
Out Vcc GND GND
4
2
3
Bottom View
Unit: mm Tolerances: 0.1mm
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
8.1
1
2
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Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Absolute Maximum Ratings (Ta=25) Parameter Supply Voltage Output Voltage Output Photo Current Operating Temperature Range Storage Temperature Range Soldering Temperature Range [Note1] Human Body Model ESD Machine Model ESD Symbol Vcc Vo IPH Topr Tstg Tsol HBM MM Rating -0.5~6.0 0 ~ Vcc-0.8 0~5 -40 ~ +85 -40 ~ +100 260 3000 300 Unit V V mA V V
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 Topr Vcc Min. -40 2.5 Max. +85 5.5 Unit V
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
3
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Electrical and Optical Characteristics (Ta=25) Parameter Supply Current Dark Current Symbol Min. Icc ID IPH1 IPH2 Light Current IPH3 IPH4 Photocurrent Ratio Saturation Output Voltage Peak Sensitivity Wavelength Sensitivity Wavelength Range
Rise Time Fall Time
Typ. 1.2*IPH 5.6 56 68 560 1.2 2.35
Max. 100 7.5 75 750
Unit A nA A A A A V
Test Condition
3.6 36 360 2.20
Vcc=3V or 5.5V; Ev= 0Lux Vcc=3V; Ev=10Lux
[Note1] [Fig.2]
Vcc=3V; Ev= 100Lux
[Note1] [Fig.2]
Vcc=3V; Ev= 100Lux
[Note2] [Fig.2]
Vcc=3V; Ev=1000Lux
[Note1] [Fig.2]
IPH3 / IPH2 Vo p
Vcc=3V; Ev= 100Lx, RL=75K
[Fig.3]
590
nm
tr tf td ts
390
--0.356 1.11 2.2 0.692
700
nm ms ms ms ms Vcc=3V,RL=27K
[Fig.4]
Switching Time
Delay Time Storage 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.
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
4
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
5
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Fig.1
Block Diagram
PDIC15-21C
2. Vcc 2. Vcc
Current Amp
1. Vout 1. Vout 3. GND 3. GND 4. GND 4. GND
Fig.2
Measurement Method of Light Current
Fig.3
Measurement Method of Saturation Output Voltage
Vcc
Light Source
Vcc
Light Source
ALS-001 PDIC15-21C
IL
GND
Fig.4
Switching Time Measurement Method
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
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http:\\www.everlight.com Dec. 01, 2007
L
R
CCI
Vout
ALS-001 AS-3021 PDIC15-21C
Vout
GND
Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Typical Electrical and Optical Characteristics Curves
Fig.5 Light Current vs. Illuminance Fig.6 Dark Current vs. Temperature
Average dark current vs. Temperature
100000
10000 Vcc = 3V , Ev= 0 Lux
Average dark current (nA)
1000 100 10 1 0.1 0.01 1E-3 -60 -40 -20 0 20 40 60 80 100
Fig.7
1.10 1.08 1.06 1.04
Light current vs. Temperature
Relative light current vs. Temperature Vcc = 3V , Ev = 100 Lux
Fig.8
1.30 1.25 1.20
Light current vs. Supply Voltage
Relative light current vs. Supply voltage Ev = 100Lux
Relative light current
1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 0.84 -60 -40 -20 0 20 40 60 80 100
Relative light current
1.02
1.15 1.10 1.05 1.00 0.95 0.90 2.0
Fig.9
Spectral Response
1.2 1.0
Relative sensitivity
Output voltage (V)
0.8 0.6 0.4 0.2 0.0 200
300
400
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
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http:\\www.everlight.com Dec. 01, 2007

T a = 25
500
600
Wavelength (nm)
Temperature (
)
2.5
3.0
3.5
4.0
4.5
Supply voltage (V)
Fig.10
8 7 6 5 4 3 2 1
700 800 900 1000 1100
Output voltage vs. Temperature
VCC = 3V EV = 100 Lux RL = 75K
0 -60
-40
-20
0
20
40
Temperature (
)

Temperature (
)
5.0
5.5
6.0
60
80
100
Surface-Mount Ambient Light Sensor
ALS-PDIC15-21C/L230/TR8
Fig.11
10
Output Voltage vs. Illuminance
1
Output voltage (V)
0.1
0.01
1E-3
1E-4
1
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3

Fluorence light RL = 1 K Fluorence light RL = 7.5 K Fluorence light RL = 27 K Fluorence light RL = 75 K
10 100 1000 10000
Ta = 25 Vcc = 3V
Illuminance (Lux)
8
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Converting Photocurrent to Voltage
ALS-PDIC15-21C/L230/TR8
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:
3. To avoid 60Hz ripple from fluorescent lamps, we suggest that the time constant must be greater than 0.5 second:
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
RL x CL
0.5
(empirical data)
Vout(max.) = Iout(max.) x RL
Vout(saturation)Vcc0.8V
9
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Surface-Mount Ambient Light Sensor
Recommended method of storage
Reflow Terms: JEDEC Level 4 Specification
ALS-PDIC15-21C/L230/TR8
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
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. Document No: DAS-015-006 Rev3
Storage humidity
60%RH max
10
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Soldering Iron
ALS-PDIC15-21C/L230/TR8
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-015-006 Rev3
11
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Packing Quantity Specification 2000 PCS/ 1 Reel
ALS-PDIC15-21C/L230/TR8
Label Format
xxxxxx xxxxxx
RoHS
xxxxxxxxxxxx xxxx xxxxxxxx
Reel Dimensions
Unit: mm Tolerance: 0.1mm
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
12
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Tape Dimensions
ALS-PDIC15-21C/L230/TR8
Unit: mm Tolerance: 0.1mm
Moisture Resistant Packaging
Label Label
Aluminum moistue-proof bag Aluminum moisture-proof bag
Desiccant Desiccant
Label Label
Everlight Electronics Co., Ltd. Document No: DAS-015-006 Rev3
13
http:\\www.everlight.com Dec. 01, 2007
Surface-Mount Ambient Light Sensor
Note:
ALS-PDIC15-21C/L230/TR8
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-015-006 Rev3
14
http:\\www.everlight.com Dec. 01, 2007

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