ALS-PT17-51C/L177/TR8 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 

‧Guaranteed temperature performance, -40oC to 85oC 

‧Wide supply voltage range, 2.5V to 5.5V 

‧Size : 2.0mm(L)*1.25mm(W)*0.8mm(H) 

‧RoHS compliant , Pb Free and Halogen Free package 

 

Description ：The ALS-PT17-51C/L177/TR8 is an 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. 

ALS-PT17-51C/L177/TR8 Ambient Light Sensor 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