https://devzone.nordicsemi.com/f/nordic-q-a/61089/nrf52840-dc-dc-regulator-hardware-connectionHi All, I am using nRF52840 chip in one of my battery powered design. As I could see the datasheet and power calculator says the current consumption of nRF is less in DC DC regulator mode than in LDO mode. I would like to know what are the changesen-USTelligent Community 13Wed, 06 May 2020 13:28:26 GMThttps://devzone.nordicsemi.com/thread/248483?ContentTypeID=1Wed, 06 May 2020 13:28:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0f1a5a30-ffa1-4ba4-8fe0-bd4603e26bcaAndreas<p>Hi,</p> <p>&nbsp;</p> <p>See the <a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html?cp=4_0_0_4_2_0_0#unique_1782262349">POWER chapter in the PS</a>. Enabling the DCDC mode requires the external 10µh+15nH between DCC and DEC4 for DCDC1 (normal voltage), and an external 10µH between DCCH and VDD for DCDC0 (high-voltage), so your description sounds correct. Remember that you still need to enable the DCDC mode in your FW, just populating the components on the PCB will not turn it on automatically. Feel free to submit your design in a private case for a free design review.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>