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品佳集团力推 Richtek 高功因多段式线性 LED 驱动方案

 2013-07-17

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:

系统方块图                       


【规格说明】
RT7321 for 220V Light bulb

RT7321 for 220V Light bulb

RT7322 for 110V Light bulb

RT7322 for 110V Light bulb

若需任何产品详情,请洽品佳集团Richtek产品线企划人员,谢谢!