Regulator connected DEC1

[masamasa]

Hi,

What is a purpose of implement Regulator connected DEC1 

To drive internal circuits ? Or  to drive external loads ?

[Turbo J]

You might want to provide more details - we don't know which chip are you talking about...

[masamasa]

I'm talking about nRF52832 and nRF52811.

and I want to know a condition that regulator has loads.

[Jared]

Hi,

DEC1 is used as decoupling for internal regulator. This pin alongside the other DEC pins should never be used to drive an external load as it will make the system unstable. 

regards

Jared 

[masamasa]

Thanks your reply !!

I want to know which circuit  DEC1 regulator drive, and when DEC1 regulator drive it. Always supplying External Power sources?

Are there any condisions/settings make DEC1 regulator powoff ?

[Jared]

Hi,

See this post for more information regarding DEC1

regards

Jared 

[masamasa]

Hi, Thank you showing othe post.

Degital cell circuit is always driven by DEC1 regulator, not by 1.3V regulator, is it correct ?

regards

[Jared]

Hi,

Yes, the digital interface is always powered by the (1.1 V - 0.9 V) regulator that is connected to DEC1. But that regulator is preceded by the 1.3 regulator that is connected to DEC4. 

regards

Jared

[masamasa]

Hi

Thank you very much.

Your explanation enhanced my understanding the Power supply system.

My question is cleared up !!

regards