https://devzone.nordicsemi.com/f/nordic-q-a/58691/nrf5340---vdd-power-supplyHI, I want to power the system using a external regulated 5V source. Then nRF5340 must be used in High Voltage Mode. When operating in High Voltage Mode, the nRF5340 is powered through the VDDH pin. As soon as I short VDDH to my 5V source, the VDD pinen-USTelligent Community 13Thu, 05 Mar 2020 11:55:59 GMThttps://devzone.nordicsemi.com/thread/238261?ContentTypeID=1Thu, 05 Mar 2020 11:55:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:137af26f-5d6a-4c76-b548-cda9186c979fMarjeris Romero[quote user=""]How is the VDD voltage ?[/quote] <p>&nbsp;The VDD output voltage is set in register <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf5340%2Fchapters%2Fuicr%2Fdoc%2Fuicr.html&amp;anchor=register.VREGHVOUT">VREGHVOUT</a>, when <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf5340%2Fchapters%2Fuicr%2Fdoc%2Fuicr.html&amp;anchor=register.EXTSUPPLY">EXTSUPPLY</a> is enabled.</p> [quote user=""]What is the maximum current one can draw out of VDD pin ?[/quote] <p>This value is TBD in the final product revision.</p> <p>BR,</p> <p>Marjeris</p><div style="clear:both;"></div>