Powering NRF52

[yulya]

Hi During schematic design, i read regarding proper powering of NRF52 (the product is battery powered 2xAAA). somehow i can't find this info now and i would like to verify that i am not wrong: "It is not recommended to connect the SOC to Booster output for example " - am i right? i am connecting it directly to the battery cell, but i do have booster with bypass in the system in order to supply correct voltage to the Motor driver and Buzzer, when battery voltage goes low (for example up to 2v). Can anyone point me to relevant document? thank you Yulya

[Roger Clark]

Check the operating voltage range in the spec.

Its something like 3.3V to 1.8V

A normal AAA will give you 1.5V, so 2 x AAA = 3V which should run the nRF52

I don't know why you want to run via a booster, I presume you mean buck-converter? Those devices normally take power all the time and will flatten your battery quite quickly

If you need to supply more voltage to the motor, you could consider having a multi cell battery pack and tap off after 3 V to feed the nRF52