LMQ66430-Q1: Question about integrated bypass capacitor

Ian Shin

Part Number: LMQ66430-Q1

Hello expert,

I found that LMQ66430-Q1 has integrated bypass capacitor, so it can reduce EMI.

But in datasheet, it seems it still use bypass capacitor

And even there are input capacitor selection guides.

How can I understand this?

Thank you.

0 Shipeng Cheng 10 months ago

Hi,

The integrated capacitance is small, it is only useful for MHz EMI. We need big capacitors outside for main power.

BR,

Shipeng

0 Ian Shin 10 months ago in reply to Shipeng Cheng

Hi, Thanks for answer.

Then can I understand that integrated capacitor is for MHz EMI, and need big capacitor for low frequency band?

Thank you.

Best regards, Ian

0 Shipeng Cheng 10 months ago in reply to Ian Shin

Yes. That's right.

0 Ian Shin 10 months ago in reply to Shipeng Cheng

Thank you.

Is there any material to refer about this?

Best Regards, Ian

0 Shipeng Cheng 10 months ago in reply to Ian Shin

Hi,

Here it is.

Power management forum