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
2013-12-17 16:49:32 上传
2013-12-17 16:49:32 上传
2013-12-17 16:49:33 上传