https://devzone.nordicsemi.com/f/nordic-q-a/6707/nrf51822---io-impedanceHi, I&#39;m using the following TI IC www.ti.com/.../tps62736 to get 3V from a LiPo battery. It has a VIN_OK pin that I can configure to alert of battery low level. The problem is that this pin is pulled up to Vbattery so when the battery is charged thisen-USTelligent Community 13Sat, 25 Apr 2015 02:23:26 GMThttps://devzone.nordicsemi.com/thread/23529?ContentTypeID=1Sat, 25 Apr 2015 02:23:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:facc8c42-409c-426e-809f-de38a35d6093RK<p>This is the closest question I can find to yours.</p> <p><a href="https://devzone.nordicsemi.com/question/1782/nrf51822-what-is-the-input-currentimpedance/">devzone.nordicsemi.com/.../</a></p> <p>That says input impedance is &#39;close to infinity&#39; and leakage current &#39;of the order of nA&#39; which would suggest your chosen resistors would work fine, in fact you could probably use even larger values without problems. You could just try it and measure the voltage you get, the worst that happens is you get a lower voltage than you need and you put the resistor values down.</p><div style="clear:both;"></div>