TSL4531

DIGITAL AMBIENT LIGHT SENSOR

TAOS112 − OCTOBER 2011

1

The LUMENOLOGY

r Company

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Copyright

E 2011, TAOS Inc.

www.taosinc.com

Features

Diverse Lighting Conditions

(400 ms, 200 ms, and 100 ms)

Power Down Mode (2.2

mA typical) Enables

Green Products

Interface

Applications

− Street Lights

− Security Lights

− Traffic Signals

− Commercial Billboards

− Automotive Instrumentation

− Cell Phones

− Tablets and Notebooks

Daylight Harvesting

− Commercial Lighting

− Industrial Lighting

Description

The TSL4531 family of devices provides ambient light sensing (ALS) that approximates human eye response

under a variety of lighting conditions. The devices have three selectable integration times and provide a direct

outdoor applications where it is exposed to direct sunlight. The device is ideal for use in automatic control of

street lights and security, billboard, and automotive lighting. The TSL4531 devices can also be used in solid state

and general lighting for automatic control and daylight harvesting to maximize energy conservation. Other

applications include display backlight control to extend battery life and optimize visibility in cell phones, tablets,

and notebooks.

Functional Block Diagram

SDA

SCL

Photodiode

Array

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Texas Advanced Optoelectronic Solutions Inc.

1001 Klein Road

S Suite 300 S Plano, TX 75074 S (972) 673-0759

Package Drawing Not to Scale

PACKAGE CL

ChipLED

(TOP VIEW)

4 SCL

3 SDA

GND 2