nRF52810: Switching the Converter mode for low current consumption

[OKA_T.T]

We plan to use it with the Converter mode enabled for low current consumption.

However, if PIN is always set to Hi in order to use the Converter mode, about 300μA will always flow due to the internal pull-down resistor. 

In order to avoid this problem, I plan to add a circuit that turns the converter mode to Hi only when the power is turned on.
How long does it take for the converter mode to become effective after the power is turned on and the converter mode is set to Hi?

Assumed operation interval
　Communication at 2-second intervals.

[Simonr]

Hi

By this, I assume you're referring to enabling the DCDC converter/regulator on the nRF52810, is that correct, or are you talking about the ADC (analog to digital converter)? Please note that two additional external components are required to use the DCDC regulator correctly. See the reference circuitry matching your package variant marked "DC/DC regulator setup" for more information.

Best regards,

Simon

[OKA_T.T]

Thank you very much for your answer.

Regarding your question, it is about DC/DC converters.
I have already designed it based on the reference circuit you mentioned.

Is it abnormal to have 300μA flowing at all times when driving the DC/DC converter as I asked earlier?

・Method under consideration

　(1) Turn off the power supply except when necessary, to avoid the constant 300μA consumption.
　(2) In order to reduce the current consumption at the time of transmission, I want to start the DC/DC converter after the power is turned on and then communicate.
　(3) For the purpose of 2) above, we would like to know how long it takes for the DC/DC converter to operate after setting its PIN to Hi.