nRF8001 current consumption at lower voltage

[PhilippS]

Hi everyone.

I want to use the nRF8001 in a low power application and therefore I want to save as much energy as possible.

I read in other discussions that the nRFgo studio gives a good overview about the current consumption. What is the supply voltage for the  current consumption shown in nRFgo studio? Is it the nominal 3V?

How does the current change if I change the supply voltage from 3V to 2V? Would it save power to reduce the supply voltage?

Thank you!!

[Kenneth]

Hi, the nRFgo Studio plot is using 3V when Enable DC/DC is used in Hardware settings. You can get an impressions of the DC/DC efficiency as function of supply voltage on page 19:

http://www.nordicsemi.com/eng/nordic/download_resource/17534/16/14489373/2981 for voltages other than 3V.

[PhilippS]

Thank you for your answer Kenneth.
Am I right that the DC/DC converter doesn't affect the idle/sleep current consumption (table 14 and table 15)?

[Kenneth]

That is correct.

[PhilippS]

Table 14 and table 15 are defined for VDD=3V. Does the idle/sleep current change when using 2.5V instead of 3V?
Thank you for your help!

[Kenneth]

They are the same.

[PhilippS]

thanks for your help Kenneth, much appreciated !