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The CS161X family is the result of a three-year investment in TRIAC interface algorithms, LED driver topologies and system architectures, which are the foundation of TruDim technology. The CS161X's digital intelligence allows the controller to identify the type of dimmer in use and adjust the compatibility algorithm to provide smooth dimming in the same way that consumers have used incandescent bulbs for decades. This intelligent adaptive digital signal processing technology is not possible with today's analog controllers.
Cirrus Logic has acquired more than 200 dimmers worldwide and has developed a compatibility test to measure the impact of the CS161X on the performance of existing solutions. The dimming compatibility test includes testing of 120V and 230V products, covering multiple and 5-10 bulbs in parallel with multiple lamp configurations.
The CS161X is the first in a new line of Cirrus Logic LED controller solutions. The CS161X family's unique adaptive dimming compatible algorithm controls the boost stage for optimal flicker-free phase dimming throughout the spectrum, including The leading edge, trailing edge, and digital dimmer achieve a light output that drops from "deep dimming" to 0%.
The CS161X integrates a variable conduction mode boost converter (CRM/CCM) that provides power factor correction and dimmer compatibility with side control, constant output current, quasi-resonant flyback or buck output stage, and is suitable for 100 -120VAC and 220-240VAC line voltage solutions.
Cirrus Logic said that the CS161X is now in volume production and delivery. It is available in a 16-lead SOIC package and is priced at $0.81 per unit in 100,000 units. Cirrus Logic expects to deliver between 5 million and 10 million LED controllers to multiple customers in 2012. 
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Cirrus Logic Introduces Digital LED Controller for 100% Dimming Compatibility
Cirrus Logic officially entered the emerging high-growth LED lighting market. The company announced the introduction of a digital LED controller, the CS161X series controller, which directly solves the dimming compatibility problem. The CS161X series controller uses Cirrus Logic's new digital TruDim. TM technology, and has been tested and proven to be nearly 100% compatible with many global dimmers.