https://devzone.nordicsemi.com/f/nordic-q-a/3714/why-is-there-a-current-from-1-5ma-bellow-1-8vHi, I use a step-down converter(not the integrated one) to generate 1,85V for the nRF51822 in my application. When the applications starts the output voltage from the converter grows &quot;slow&quot; to 1,85V. I recognized, that the nRF draws some currenten-USTelligent Community 13Wed, 03 Sep 2014 12:39:59 GMThttps://devzone.nordicsemi.com/thread/13470?ContentTypeID=1Wed, 03 Sep 2014 12:39:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b73157a-8890-4d8f-9062-679806d77263Richard<p>thank you, perfect,.. and my rise time is faster than 60ms,..:)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/13469?ContentTypeID=1Wed, 03 Sep 2014 11:35:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a90f005f-3591-4568-b139-20dc95f622ebNikita<p>There is required operating conditions for nRF51822 described in Product Specification.</p> <p>You can see in &quot;7 Operating conditions&quot; there is maximum tR_VDD (Supply rise time (0 V to 1.8 V)) = 60 ms and note:</p> <blockquote> <p>The on-chip power-on reset circuitry may not function properly for rise times outside the specified interval.</p> </blockquote> <p>So I don&#39;t think it&#39;s possible to do anything with this problem without additional external components.</p><div style="clear:both;"></div>