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主题中讨论的其他器件：UCD90120A、UCD9090、UCD90160A、UCD90160、UCD90320U、UCD90120、UCD9090A、UCD90124、UCD90124A、 UCD90320
UCD90xxx 仅在电源轨电压首次达到电源正常开启阈值后才会开始监测欠压 (UV) 故障。在此之前，电源轨保持在“斜升”状态，因此不会监测 UV 故障。
要在 EN 引脚有效后的指定时间段内检测电源轨故障达到电源正常开启阈值，请将最大导通阈值设置为某个有限值。
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
