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TLC59116在step 1~4时LED不亮

Other Parts Discussed in Thread: TLC59116

Hi

请教下TLC59116在256阶调光的1-4阶时均不亮,该怎么配置或者怎么解决?LED点亮是否有最小电流要求?(目前20mA,如图所示是5阶点亮和4阶没有亮的情况)另外烦请提供下此产品线的联系方式,我也可邮件联系,谢谢。