What is the role of LED driver IC?
In recent years, with the rise of people's awareness of energy conservation, the role of LED driver ICs in the field of green lighting has attracted widespread attention.
In respect of energy saving and emission reduction, most of the LED driver ICs adopt the DC driving method, have ultra-low power consumption, and can save more than 80% of energy consumption; in terms of life, LED uses a solid cold light source, there is no filament luminous Disadvantages of burning, thermal deposition, etc., the service life can reach 50,000 to 100,000 hours, more than 10 times longer than the life of traditional light sources; in the aspect of environmental protection, LED as a green light source has no ultraviolet ray and infrared ray in its spectrum, low in heat and no frequency Flash, no radiation, and can be recycled for recycling.
LED driver IC principle
The LED driver chip contains a constant current circuit, which can set the output constant current value through an external resistor. The general principle of the LED driver IC is to control the switching time of the output channel through the enable terminal of the chip, and the switching frequency is up to 1 MHz. The current output is extremely fast and supports applications with high color gamut changes and high picture refresh rates. Built-in open-circuit detection, overheating, and over-current protection functions greatly increase the reliability of the application system.
At present, LED driver chips are developing in the direction of low cost, high performance, and small size. Although LED driver IC technology is quite mature, its development space is still large. For the domestic market, the current "price war" will be fully transformed into a "value war", and will focus on the overall dimming demand, quality and stability of LED driver ICs.
