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关于LM2904DR 电流过大

Other Parts Discussed in Thread: LM2904

1. 现在产品上电流过大,电流要求:9.45-11.55A,实测:11.7A;    11.8A;   11.7A;   11.9A;   11.9A.(有5个不良品)

2.100个产品中有5个出现了以上问题. 用同批LM2904替换后,产品测试正常。

3.在已测试良品中,换上这5个()不良的)LM2904后,电流偏大.

请帮忙分析问题在哪里?

谢谢!