ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

TSL45315 Ambient Light Sensor

Digital ambient light sensor with direct lux output and Vdd I²C


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.

Key Features

  • Direct lux output
  • Wide dynamic range
  • Approximates Human Eye Response in diverse Lighting environments
  • 2mm x 2mm ChipLED (CL) package

Key Benefits

  • 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 Facts

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

Additional Information

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