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LED驱动TLC59116

Other Parts Discussed in Thread: TLC59116

我现在使用的三片TLC59116驱动33个近红外LED,LED的最大电流为50毫安,我们使用时每个通道LED最大电流为40毫安左右,请问为什么当电流达到40毫安左右时,近红外LED灯会出现频闪现象,如何去解决这个问题?