• State Not Answered
  • Replies 1 reply
  • Subscribers 73 subscribers
  • Views 1198 views
  • Users 0 members are here
Attachments (0)
Nordic Case Info
  • Case ID: 241988
Options
This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

Vdd on the nRF52840-DK

Jagbir

In the nRF52840-DK, what is the rationale behind Vdd being kept 3.00 VDC , where the overall current would have been lower with 3.3 VDC.

Parents
  • 0

    Hi, I would guess it's because the nominal voltage when using the coin cell battery is 3V.

    Even though the current will be lower with 3.3V using the DCDC regulator, the power will be the same. And if the LDO regulator is used the current will be the same and the overall power increases with higher voltage. The DK itself is not designed to be a low power device. You can power the chip directly from an external source if you want to measure the current with other voltages than 3V.

Reply
  • 0

    Hi, I would guess it's because the nominal voltage when using the coin cell battery is 3V.

    Even though the current will be lower with 3.3V using the DCDC regulator, the power will be the same. And if the LDO regulator is used the current will be the same and the overall power increases with higher voltage. The DK itself is not designed to be a low power device. You can power the chip directly from an external source if you want to measure the current with other voltages than 3V.

Children
No Data
Related
Terms of service