https://devzone.nordicsemi.com/f/nordic-q-a/63277/is-it-possible-to-disable-external-circuitry-power-in-system-off-modeI want to use nrf52840 in high voltage mode, with 3.3v ldo voltage output. I need to be able to disable vcc output during sleep mode. Is it possible?en-USTelligent Community 13Thu, 02 Jul 2020 07:10:24 GMThttps://devzone.nordicsemi.com/thread/257978?ContentTypeID=1Thu, 02 Jul 2020 07:10:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:44f9a502-b8d7-4278-94e7-f39431adff6dketiljo<p>You will need to use a switch or a transistor in that case then. VDD is the power supply to the nRF52840 and if you cut that, the device will power down for good.</p><div style="clear:both;"></div>