LPSTK-CC1352R: Voltage Requirements for LPSTK-CC1352R

Alan DeMars

Part Number: LPSTK-CC1352R
Other Parts Discussed in Thread: CC1352R, OPT3001

I'd like to power the LPSTK-CC1352R with a standard 3.7V LI-ION battery rather than two AAA batteries or single coin cell battery. I haven't been able to find a spec for the input voltage requirements anywhere. Is it safe to power the board with 3.7V?

Alan

over 2 years ago

0 Simon J over 2 years ago

TI__Genius 11810 points

Hi,

CC1352R supports up to 3.8 V, but most of the external sensors do not support 3.7 V.

OPT3001 supports max 3.6 V -> Remove R29
HDC2080DMB supports max 3.6 V -> Remove R25
ADXL362BCCZ supports max 3.5 V -> Remove R30
MX25R8035FZUIL0 supports max 3.6 V -> Remove R24 and R21

In addition to removing the above resistors you should make sure that the DIOs connected to these sensors are not used, or you can remove the entire sensor from the board.

You can find the schematics and layout of LPSTK-CC1352R here: https://www.ti.com/lit/zip/swrr170

-Simon

0 Alan DeMars over 2 years ago in reply to Simon J

Prodigy 50 points

Thank you for your reply. If I understand you correctly, you're saying that if I power the board with 3.7V I should remove the zero ohm resistors listed so that the four sensors are disconnected from the 3.7V. Is that correct?

Alan

+1 Simon J over 2 years ago in reply to Alan DeMars

TI__Genius 11810 points

That is correct.

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LPSTK-CC1352R: Voltage Requirements for LPSTK-CC1352R