https://devzone.nordicsemi.com/f/nordic-q-a/44280/reg0-specificationsHello, I&#39;m searching informations about the regulator REG0 (Internal regulator of the nRF52840 chip). I have find the chapter &quot;5.3.8.2 Regulator specifications, REG0 stage&quot; of the datasheet &quot;nRF52840_PS_v1.0.pdf&quot; but it is not specified for what regulatoren-USTelligent Community 13Thu, 07 Mar 2019 14:11:59 GMThttps://devzone.nordicsemi.com/thread/174832?ContentTypeID=1Thu, 07 Mar 2019 14:11:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:de9f44ee-7881-46ec-8b3f-0cc05253c397Stian R&#248;ed Hafskjold<p>The spec is for both modes. The regulator switches between different modes automatically.</p> <p>The maximum voltage drop would be the maximum operating input voltage for the REG0 stage, 5.5V, minus the minimum output voltage of the REG0 stage, 1.8V.</p> <p>Sorry, we do not provide any efficiency estimates for the REG0 (or REG1) regulator because it switches between LDO/DCDC and refresh mode (low power mode) based on application.</p> <p>I can do some measurements here if you explain some more about your application, which peripherals are running, and if you plan on supplying external components from REG0.</p><div style="clear:both;"></div>