ams AS7220 CCT and Lumen Maintenance Manager



Simplify single or selectable CCT luminaire and replacement lamp designs with the AS7220 calibrated CCT and lumen maintenance smart lighting manager. Closed loop calibrated tri-stimulus color sensing for direct CIE color point mapping and control enables lower precision components to produce a higher-quality single or selectable-CCT luminaire or replacement lamp.

Configurable single CCT lifetime target values are stored at the time of manufacture, allowing the AS7220 to manage independent LED strings to assure consistent CCT over time, temperature, and the full range of dimming. In addition, a selection of industry standard CCT targets can be selected via resistor configuration to enable a single BOM to satisfy multiple CCT SKUs while increasing lifetime color precision. Target lumen output lux-criteria are similarly configurable and are used by the AS7220 to map internal lux to manage LED strings to replace "percent of drive current" with "percent of rated lumen output", for all dimming operations.

Legacy controls are fully supported with direct connection to 0-10V control,. Control outputs include direct PWM management of digital LED drivers or analog 0-10V for standard dimmable drivers.



  • Intelligent controller with integrated XYZ tristimulus sensor and selectable CCT presets
  • Industry standard CCT presets via mode resistor, or single CCT target value in Flash
  • Selectable drive modes, including PWM-switched current steering or PWM-based duty cycle management
  • Remaps dimming response from percent of power to percent of rated lumen output
  • 20-pin LGA 4.5mm x 4.7mm x 2.5mm, -40°C to 85°C
  • Compact lighting-capable package with no added optics required


  • Flexible manufacturing and stocking inventories… One BOM can support multiple CCT SKUs
  • Eliminates lumen/color binning penalty, significantly reducing cost of quality lighting
  • Enables cost-optimized single channel drivers to deliver a precise CCT result
  • 100% lumen maintenance factor over the life of the luminaire



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