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[FAQ] [参考译文] [常见问题解答]为什么 UCD90xxx 未上电时引脚上存在泄漏电流?

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Other Parts Discussed in Thread: UCD90120A, UCD9090, UCD90160A, UCD90160, UCD90240, UCD90320U, UCD90120, UCD9090A, UCD90124, UCD90124A, UCD90320
请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1051033/faq-why-is-there-leakage-current-on-pins-when-the-ucd90xxx-is-not-powered-up

主题中讨论的其他器件:UCD90120AUCD9090UCD90160AUCD90160UCD90320UUCD90120UCD9090AUCD90124UCD90124AUCD90320

UCD90xxx 器件具有一个内部 ESD 二极管、可在所有 IO 引脚和 MON 引脚上提供保护。 当 UCD90xxx 器件未由3.3V 电源供电时、如果对引脚施加正电压、则 ESD 二极管正向偏置、并可能观察到泄漏电流。 如果可以预见到这种情况、则应使用电阻器将电流限制在1mA 以下。

有关更多常见问题解答、请查看以下文档。

UCD90xxx 系列常见问题解答 

UCD9090 UCD9090A UCD90120 UCD90120A UCD90124 UCD90124A UCD90160 UCD90160A UCD90240 UCD90320 UCD90320U