LDO regulated to 1%?

[David]

I am using the nRF51822 utilizing the internal LDO setup. I received a question during regulatory submittal that I am not able to answer and am looking for help on. Is the voltage supplying the radio ciruit regulated to 1%?

Thanks.

[FormerMember]

The LDO can only power the nRF51822, and it is not possible to draw any excessive current from it. Could you check if you need to have the accuracy of an LDO that is integrated in the chip and with no real access to it?

[FormerMember]

The accuracy of the internal LDO is 1.5 % plus load regulation and offset. However, it should work fine to qualify for TELEC (Japan radio mark). I would recommend you to contact our regional sales manager for Japan and ask him how it works. I will send you a PM with his contact details.

When you find out what you had to do, it would be nice if you could update this tread with the steps/clarification :)