https://devzone.nordicsemi.com/f/nordic-q-a/44051/nrf52840-internal-regulated-power-supplyHi, I am learning nRF52840 development and making a sensor device. The datasheet of the nRF52840 chip says: Regulated supply for external components up to 25 mA I want to know how to use that internal power supply to drive external 3.3V sensoren-USTelligent Community 13Wed, 26 Feb 2025 20:41:33 GMThttps://devzone.nordicsemi.com/thread/524930?ContentTypeID=1Wed, 26 Feb 2025 20:41:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a99b033a-bfdf-4b67-b01d-e1c483f89236trackerfx<p>Hi. Just for clarification, when powering the NRF52840 from VDDH powering a 15mA LED directly from VDD will damage the internal regulator in System OFF mode, or will the LED simply not light?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/172806?ContentTypeID=1Mon, 25 Feb 2019 14:05:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca017d5e-ad5d-4b98-9664-51b0f1361623Andreas<p>Hi,</p> <p>&nbsp;</p> <p>You would have to supply the nRF52840 at the VDDH pin, VDD then becomes a regulated output. See <a href="https://www.nordicsemi.com/DocLib/Content/Product_Spec/nRF52840/latest/power?136#topic">this section in the product specification</a>. Note though that in System OFF, max supply for external circuitry is 1mA, for 25mA you need to stay in System ON.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/172608?ContentTypeID=1Sat, 23 Feb 2019 11:40:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd74b96b-6382-4217-bbe1-de964c72eb0fTurbo J<p>Check Errata 197 in the Errata sheet - this downgrades the regulator to be an LDO only. </p> <p>You can use this DCDC by connecting external components to the VDD rail. The nRF52840 has several VDD balls (and we don&#39;t know which is the actual DCDC Reg0 output), but all of these must be tied together on the PCB anyway.</p><div style="clear:both;"></div>