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 16-bit lux output via an I2C bus interface. The wide dynamic range of the ALS makes it particularly useful in 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.

FEATUREs
● Simple Direct Lux Output
● Approximates Human Eye Response in
   Diverse Lighting Conditions
● Three User-Selectable Integration Times
   (400 ms, 200 ms, and 100 ms)
● Wide Dynamic Range — 3 lux to 220k lux
● Rejects 50 Hz/60 Hz Lighting Ripple
● Low Active Current (110 A typical) with
   Power Down Mode (2.2 A typical) Enables
   Green Products
● 16-bit Digital Output with I2C Compatibility
● Ultra-Small 2 mm  2 mm ChipLED package
● 2.5-V Supply Voltage with 1.8-V Logic
   Interface

APPLICATIONs
● Outdoor Lighting Control
   − Street Lights
   − Security Lights
   − Traffic Signals
   − Commercial Billboards
● Display Backlight Control
   − Automotive Instrumentation
   − Cell Phones
   − Tablets and Notebooks
● Solid-State and General Lighting and
   Daylight Harvesting
   − Commercial Lighting
   − Industrial Lighting