AS7220 CCT and Lumen Maintenance Manager
Selectable CCT and lumen output maintained for the life of the luminaire
Features
- 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
Benefits
- 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
Product parameters
| Sensor Type | CIE tristimulus XYZ |
|---|---|
| Applications | Closed loop CCT and lumen compensation |
| UART | No |
| Reference Networking | n/a |
| Smart Ltg Command Set | n/a |
| Lux/CCT Control | Flash and hardware configurable |
| I²C | Master for added ambient light sensing |
| Package | 20-pin LGA with aperture |
General description
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.
This product suits for the following applications:
- Accurate lamp to lamp CCT and lumen output
- Flexible finished goods luminaire and replacement lamp inventory approaches
- Selectable CCT, in the factory or at the customer
- Standalone color and lumen maintenance lumaires and lamps
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS7221/20/11/10 Smart Lighting IntegrationKit | Application Board | Smart Lighting Integration Kit for AS722x/1x |
Resources
| Type | Description | Language | ||
|---|---|---|---|---|
| Evaluation Software | AS72xx_EvalSW_v5-1-0.zip AS72xx Firmware Update using GUI | EN | ||
| App | AS72xx_App_v5-1.zip Configuration Tool for AS72xx | EN |
Technical documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Datasheet | Document version 1-00 | English | ||
| Application Note | AS72xx External Flash program and update 10V1 | English | ||
| Application Note | AS72xx How to Flash AS72xx Firmware using | English | ||
| Application Note | True Color Luminaire Design Bluetooth Connected | English | ||
| Application Note | AS72xx How to Program AS72xx Firmware with FlashCatUSB 1V24 | English | ||
| Other Product Document | AS7220 2-slide brief | English | ||
| Other Product Document | ams Smart Lighting Short Intro-Jun 2018 | English |
Notifications
| Type | Description | Language | ||
|---|---|---|---|---|
| Product Change Notification | CN25-2019 (Customer Information AS72xx) | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS7220 Block Diagram | English |
Related boards
Smart Lighting Integration Kit for AS722x/1x
AS7221/20/11/10 Smart Lighting IntegrationKit
The Smart Lighting Integration Kit (SLIK) is a complete color tuning luminaire reference design solution, built around the AS7221 network-enabled smart lighting manager. The kit applies to the full AS72xx smart lighting manager, including the AS7221, AS7220, AS7211, and AS7210. The integration kit is designed to move developers rapidly from demo to proof-of-concept integration into a prototype luminaire design. It consists of two interconnected modules: the AS7221 sensor, networking and power module with integrated Bluetooth Smart (BLE); and the LED module with two strings of white LEDs for tuning (warm and cool). The SLIK includes the 2-section board, a diffuser, USB to serial interface cable, and power supply with US/European adapter. The included memory stick includes complete user documentation, GUI and drivers.
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