nRF52840 REG0 Buck Usage

[ZAC]

Hi, is it possible to use the onboard buck regulator of the nRF52840 to supply the 3V for the rest of the circuitry while nRF52840 is off (and also for the nRF52840 while it is on)? As you might have guessed, the motivation is to have an energy efficient and space saving design when using a Li battery as the energy source (by connecting it directly to VDDH). Thanks!

[run_ar]

Did you check the external circuitry supply chapter in the OPS?

[ZAC]

Thanks for the hint. What I didn't find are efficiency characteristics concerning the DC/DC regulators for REG0 and REG1. Any figures on that?

[run_ar]

Not sure exactly what we will have, but at least some current consumption vs supply voltage charts similar to what we have for nRF52810.e.g. here.However I don't know if we will have this for REG0 and REG1 yet.