nRF52840 Engineering B PAN 186: How much increased current consumption

[yves]

The engineering B errata mentions PAN 186, that the current consumption in System ON Idle is increased if High-Voltage mode is used. Is there any information available how strong this current increase is? That would help us deciding if we need to avoid High-Voltage mode.

[Sigurd]

Hi,

First note that this issue is only present on the nRF52840 Engineering B(Build code BB0). This issue will be fixed on the next nRF52840 revision. To answer your question, I did a quick measurment here, and I see ~200µA increased current draw in System ON using the high voltage mode.

[Sigurd]

The 200µA increase is mostly fixed, and I don't think it will be reduced even if you enable DC/DC or not. I tested this at 4.2 V using LDO.

I think the next revision will come early next year(January/February). But you should contact your local Nordic RSM(regional sales manager) for the timeline. Send me a PM with you location if you don't know who your Nordic RSM is.