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LP8866-Q1: PWM一下子调到最大,背光闪烁问题

Part Number: LP8866-Q1


背光驱动器是LP8866,三路输出,LED灯板18颗灯珠,每路共6颗。

现在LP8866的PWM如果一下子调到最大100%,背光一闪一闪,如果慢慢往上加就不会闪烁,请问是什么原因。