Can the VDD pin of nRF52833 be use to supply another chip in High Voltage mode?

[west]

Hello, 

- If I supply nRF52833 in High Voltage mode (LDO + LDO sub-mode, not the DC/DC convertor).

- Set the VDD in the corresponding register to be e.g. 2.7V (VREG0 LDO drop seems to be around 0.3V, based on what I found here in this forum).

Can I supply another chip with the resulting 2.7V at the VDD pin?

- If yes, how much can I pull from the nRF52833 VDD pin?

Btw. I did not find any information of how much the VREG0 LDO drop is in real. Are there any real values? Kind of LDO drop graph?

 

Thanks in advance for answer(s)!

[Jared]

Hi,

External supply is not supported by the nRF52833. However, nRF52840 supports external supply and has a limit of 25 mA(depending on TX power).

regards

Jared 

[west]

Hello Jared

Thanks for the fast reply. Its a pity that the nRF52833 can't supply external, but this is clear now.

Based on that fact, I don't need any answer to my 2nd question as I have to adapt our design accordingly.