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你好。
我在使用TPS76801QD时发现以下两个问题:
第一,当使能端的电压小于或等于1.3V时,元件可以正常工作;超过时则不可。这一数值和数据手册上的描述不符,低于high-level input enable voltage的最小值而高于low-level input enable voltage的最大值。
第二,据数据手册第三页的注释的说明,最小输入电压的大小为2.7V或典型输出值加一,以大者为准。可是使用时发现当使能端电压为低电平时,只要输入值大于设定的输出值,元件就能正常工作,与手册的描述不符。
感谢你的回答。
Hello,
Both of the issues you have described are due to a misunderstanding of the EN pin functionality. For this device, EN is an active-low digital pin, so the device is enabled (turned on) when the EN signal is low, and the device is disabled (turned off) when the EN signal is high.
Regards,
Nick