LED Driver IC features current output requirement is consistency and constancy. LED Driver IC need to control one or more stars LED,
LED brightness roughly linearly with the adoption of electric current
proportional to the relationship, so make the LED make the same
brightness, you must be connected together to maintain the same amount
of current LED. As the current slight changes will affect the brightness, which for many LED applications will be unacceptable.
In
addition, LED itself is still possible because the temperature or the
efficiency of use of time and other issues caused by a recession, the
LED driver IC itself must be designed to effectively detect the LED
internal error mechanism. And because manufacturers epitaxial growth process may result in differences in LED die, so you can through the LED driver IC to change the way digital codes to obtain the relative output current, adjust the current bias.
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