Data Sheet

ManualsBrandsSparkfun Electronics ManualsInfrared & Light SensorsSparkFun LilyPad Light Sensor

LifecyclePhase:

Revision : 5

Expired Period: Forever

Release Date:2014-02-17 14:08:50.0

www.everlight.com

Ambient Light Sensor

Surface - Mount

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, -40

C to 85

‧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

Description

The ALS-PT19-315C/L177/TR8 is a low cost ambient light sensor, 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

‧

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

Summary of content (11 pages)

PAGE 1
Ambient Light Sensor Surface - Mount 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.
PAGE 2
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Package Dimensions Top View Collector Emitter Collector Mark Bottom View Unit : mm Tolerances : ±0.1mm 2 Copyright Revision :5 © LifecyclePhase: Release Date:2014-02-17 14:08:50.0 2012, Everlight All Rights Reserved. Release Date : 12.24.2013. Issue No: DLS-0000039 Rev.5 www.everlight.
PAGE 3
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Absolute Maximum Ratings Parameter Symbol Rating Unit Supply Voltage Vcc -0.5~6.0 V Operating Temperature Range Topr -40 ~ +85 °C Storage Temperature Range Tstg -40 ~ +100 °C Soldering Temperature Range [Note1] Tsol 260 ± 10 °C [Note1] Note1: For detail reflow time and the recommended temperature profile, please refer to page 8. Recommended Operating Conditions Parameter Symbol Min. Max.
PAGE 4
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Electrical and Optical Characteristics (Ta=25℃) Parameter Symbol MIN. TYP. MAX. Unit Test Condition Dark Current ICEO --- --- 0.1 uA VCE=10V, Ev= 0Lux Collector-Emitter Saturation Voltage VCE(sat) --- --- 0.4 V IC=2mA, Ev= 1000Lux IPH1 5 15 --- uA VCE=5V, Ev= 100Lx IPH2 50 150 --- uA VCE=5V, Ev= 1000Lx IPH3 140 520 --- uA VCE=5V, Ev= 1000Lx Photocurrent Ratio IPH3 / IPH2 --- 3.
PAGE 5
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Typical Electrical and Optical Characteristics Curves Fig.1 Light Current vs. Illuminance Fig.3 Fig.2 Spectral Response 100 Fig.4 Spectral Response (Typ.) Light current vs. Supply Voltage 1 .0 4 Ev = 100 Lux 1 .0 3 80 1 .0 2 Relative light current Relative Sensitivity (%) Output Voltage vs. Illuminance 60 40 20 1 .0 1 1 .0 0 0 .9 9 0 .9 8 0 .9 7 0 300 400 500 600 700 800 900 Wavelength  (nm) Fig.5 0 .
PAGE 6
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Converting Photocurrent to Voltage 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: Vout(max.) = IPH(max.) × RL ≦ Vout(saturation)＝Vcc－0.4V RL × CL ≧ 0.
PAGE 7
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/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 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.
PAGE 8
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 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. 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.
PAGE 9
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Packing Quantity Specification 4000 PCS/ 1 Reel Label Format 9 Copyright Revision :5 © LifecyclePhase: Release Date:2014-02-17 14:08:50.0 2012, Everlight All Rights Reserved. Release Date : 12.24.2013. Issue No: DLS-0000039 Rev.5 www.everlight.
PAGE 10
DATASHEET Ambient Light Sensor Surface - Mount ALS-PT19-315C/L177/TR8 Reel Dimensions Unit: mm Tolerance: ±0.1mm Tape Dimensions Emitter Collector Unit: mm Tolerance: ±0.1mm 10 Copyright Revision :5 © LifecyclePhase: Release Date:2014-02-17 14:08:50.0 2012, Everlight All Rights Reserved. Release Date : 12.24.2013. Issue No: DLS-0000039 Rev.5 www.everlight.
PAGE 11
DATASHEET Ambient Light Sensor Surface - Mount 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.