LED lighting will leap in the development in the near future. LED is widely recognized as a green clean light. The long life LED lights source, energy saving, easy application, the use of low-cost lighting in the home will be a flood of applications.
In the field of LED lighting, the correct choice of the LED driver IC is essential. In order to reflect the characteristics of the LED lamp energy saving and long life. Good matching of the driver IC, the advantages of LED lighting can not be reflected. In the selection of LED drivers IC should be noted the performance indicators and how to use it?
The LED light source technology are getting mature. The per-watt light-emitting lumen rapid growth, and lead gradually decline to lower prices. 1W LED light source for example. The price in spring of 2008 is one-third of the price in spring of 2006, and it will dropped to fourth in year of 2009.
The high-energy, long life, and the environmental benefits of the superior performance of LED lamps are generally recognized.
1. High energy saving LED: DC drive, ultra-low power consumption(single tube 0.03-1W) electro-optical power conversion close to 100%, the same lighting effects than traditional energy sources more than 80%.
2. Long-life LED: LED light source is known as the longevity light. Solid cold light source, epoxy encapsulated, light body and no loose parts, it does not exist filament light easy to burn, heat deposition, the light fades and fast drawback life of up to 50000-100000 hours longer life than traditional light sources 10 times.
3. The LED environmental benefits: LED is a green light, the environmental benefits of better. No ultraviolet and infrared spectra, low in calories and no flicker, no radiation, and waste recycling, no pollution, and no mercury element, cold light source. It is safe to touch and belongs to a typical green lighting.
The working character of LED lighting source
The VF voltage of the LED lighting is very low, under normal circumstances is 2.75 to 3.8V, the IF is generally is 15 to 1400mA. LED driver IC output voltage is VFxN, VFx1 IF constant current at 15 ~~ 1,400 mA, LED lamps use LED light source has low power (IF 15 to 20mA) and high power (IF greater than 200mA) two kinds.