LM3880はデータシートには、8.3項に「For systems requiring only powerup sequencing, a capacitor at the EN pin can be used to create a delay or a resistor divider can be used to enable the device based on a certain voltage threshold. While these solutions work for powerup sequencing, it does not powerdown the flag outputs in sequential fashion because the flag outputs simply follow the input supply. For systems requiring both powerup and powerdown sequencing, use an external enable signal, such as a GPIO signal from a microcontroller, to properly control powerup and powerdown of the flag outputs.」とありますが、LM3881は抵抗分圧器を使い、VCCとENピンに同じ電源を使用した場合には、powerdown sequencingはどう動作するのでしょうか?LM3880と同様に、電源に依存しシーケンス動作はしないのでしょうか?