Hi, I'm working on a project and I need the GPIOs to have 3.3V available when the nRF52840 is in deep sleep, in order to use wake-up on GPIO. So I'd like to know what the DCCH voltage is when DCDCEN is enabled and the device is in deep sleep.
Does the DCDC completely turn off in deep sleep, and does the internal LDO take over?
If so, does the internal LDO regulate down to 1.8V or 3.3V?
The idea is to power VDDH with a LiPo battery.
Also, I read on this forum that the quiescent current of the DCDC on DCCH in idle is around 35 µA — how much would it be in deep sleep?
Thanks in advance!