高功因多段式线性 LED 驱动方案
发布时间：2013-12-17 16:50
发布者：大联大云端
关键词：
LED
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Richtek Multi-string Linear power solution for LED Lamp 【方案介绍】 RT7321 work for 220Vac input, RT7322 work for 110Vac input No electrolytic capacitor and transformer required High Power Factor >0.9 Programmable LED current (WQFN-20L 5x5 Package) Easy EMI Solution Minimized BOM cost and space required 【方案特色】 Unique 2 Parallels and 2 Series driving method to achieve better LED utilization, 16% greater than 4 Series driving method Gain more lumen with the same LED, or Save LED chip for the same lumen High efficiency : around 80% High Power Factor: >0.9 【系统方块图】 
【規格說明】 RT7321 for 220V Light bulb 
RT7322 for 110V Light bulb 
本方案来自大联大云端 |
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