feedback
Rate this webpage

Need
Support?


Ask An Expert

Our Ask An Expert knowledge base contains answers to questions from designers like you. Browse the knowledge base by category or search key words. Not seeing what you need? Ask An Expert a question of your own.
All   >>  LED Lighting   >>   General Lighting Applications   >>   Questions
 

Designing a LED fixture with LV AC input. The LED picked is 350ma 3.5V. There is a specification for high efficiency (;90%), minimum EMI, PF minimum of 0.7 (on any intensity), unit is to be dimmed for Medium intensity of 30% and Low to 10% by internal sensing of input (not linear dimming, example: input decrease 83% to produce 30% LED intensity and decrease to 72% input for 10% intensity), to be used in ambient temp of -40C to +55C. Need a recommended driver.

You can consider our NCL30105 http://www.onsemi.com/pub_link/Collater ... 0105-D.PDF\nNCL 30000 http://www.onsemi.com/pub_link/Collater ... 0000-D.PDF or \nLV5026M http://www.onsemi.com/pub_link/Collateral/ENA1950-D.PDF\nas a offline LED drivers for your application. Efficiency with these topologies will be less than 90%.\nThank you Answered by:
ON Semiconductor
2011-12-21 22:29:07.0