LP5864: About the capacitor connected to the VIO_EN pin

Hi,

It will be better to follow our datasheet guidance, and I also want to know why you need to use a 1uF capacitor instead of 1nF?

Thanks!

Ives

Hi Ives,

Thanks for the reply.
I understand that I should design with 1nf.
I designed the board with 1μF by mistake and wanted to know if it would cause any problems.
If it is better to change it, I will do so.

Sincerely.
Ryu

Hi Ryu,

If it is convenient for you, changing it to 1nF is the best way to do it.

And if you have any applications problem about LP5864, I'm glad to help you with it!

Thanks!

Hi Ives,

I understand.
By the way, what kind of problems do you anticipate?

Sincerely.
Ryu

Hi Ryu,

I need to test that but now I'm working from home so I can't do the test, sorry for that.

If you really need the result, I can test next week and give you the feedback.

Thanks!

Hi Ives,

We would appreciate confirmation if possible, as the change would require a board change as well.

Sincerely.
Ryu

Hi,

Could you wait for the result until 12/21, because I still on home.

Thanks!

Hi Ives,

I understand.
I am waiting for the results.

Sincerely.
Ryu

Hi Ryu,

Thanks for your understanding.

Hi,

I got the covid-19 so cannot go back to office; I think the feedback for you will be delayed to next week, sorry for that.

Best Regards

Hi Ives,

Understood.
I will be waiting to hear from you.
Take care of yourself.

Sincerely.
Ryu

Hi Ives,

How are you feeling?
What have you found out?

Sincerely.
Ryu

Hi Ryu,

Sorry for your waiting, I've already came back to office.

But I just start my rotation, so I'm quite busy this week, can I give you the feedback next week?

Sorry again!

Ives

Hi Ives,

Thank you for your reply and confirmation.
Do you have any guesses as to why 1nF is recommended?
If 1μF is OK, I thought it would be better to unify the other pins since they are connected with 1μF.

Sincerely.
Ryu

Hi Ryu,

I think I need to ask our system engineer to see how the internal circuit works, please give me some time.

Thanks!

Best Regards.

Hi Ives,

Was there anything you could tell me about this?

Sincerely.
Ryu

Hi Ryu,

I still working on this, and I will let you know once I have some update.

Thanks!

Ives

Hi Ives,

Pulled up to power supply.
Now I understand why 1nF is recommended.
Thank you very much.

Sincerely.
Ryu