NRF52840 power consumption using only DC/DC of REG1

RE: NRF52840 power consumption using only DC/DC of REG1

Sebastian — Mon, 05 Mar 2018 09:15:17 GMT

Sorry for the very late reply Petter. I lost the email notification and just now managed to read your answer.

Thank you very much. This can be closed now.

RE: NRF52840 power consumption using only DC/DC of REG1

Petter Myhre — Tue, 13 Feb 2018 08:18:17 GMT

I am a Nordic engineer.

RE: NRF52840 power consumption using only DC/DC of REG1

Sebastian — Tue, 13 Feb 2018 07:30:15 GMT

Thanks Petter. A Nordic engineer has been assigned to this. So let's see what they will say.

RE: NRF52840 power consumption using only DC/DC of REG1

Petter Myhre — Tue, 30 Jan 2018 13:02:26 GMT

It should be REG1 only as long as nothing else is stated, so ITX,0dBM,DCDC,5V,REG0HIGH is with REG0, while ITX,0dBM,DCDC is with REG1 only. I agree that this is a bit unclear, hopefully it is clearer when final version of the PS is out.

So with 3V, DCDC and REG1 only you can look at

IDDFLASHCACHEDCDC 3.6mA for the CPU

and

ITX,0dBM,DCDC 4.9mA for the radio current consumption when transmitting.

IDDFLASHDCDC/MHz is just 3.6mA / 64MHz = 56uA/MHz.