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TSL45315 Ambient Light Sensor

Digital ambient light sensor with direct lux output and 1.8V I2C


  • Direct lux output
  • Wide dynamic range
  • Approximates human eye response in diverse lighting environments
  • 2mm x 2mm ChipLED (CL) package


  • Requires no lux equation software calculations
  • Enables 3 to 220K lux bright sunlight operation
  • Enables automatic display brightness control for reduced total system power consumption
  • Reduces board space requirements while simplifying designs

Product parameters

Supply Voltage [V] 2.3 - 3.3
Max. Lux
Temperature Range [°C]
Packages CL

General Description

The TSL4531 family of devices provides ambient light sensing (ALS), giving direct lux output that approximates human eye response under a variety of lighting conditions. While useful for general purpose light sensing, the device is particularly useful for sensing light in applications where the device is exposed directly to the ambient light such as street lighting where bright sunlight can produce very high lux readings. Other applications include display management with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions.

This product suits for the following applications:

  • Outdoor lighting control
  • Display backlight control
  • Solid state lighting control for daylight harvesting


Title Category Headline Buy
TSL4531EvalKit Application Board Evaluation Kit for TSL4531

Technical Documents

Name Type Description Version Language
TSL4531_BD000160_1-00.png Block Diagram TSL4531 Block Diagram 1-00 English
TSL4531_DS000182_3-00.pdf Datasheet Document version 1-01 3-00 English

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