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TPS92640: 关于模拟量输入为0时 LED灯珠微微亮现象

Part Number: TPS92640

你好 请问下使用这款控制芯片,发现模拟量输入为0时,灯珠仍然存在微微亮现象,是否和电阻R104 R69等取值不符合要求有关?