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CC3200: Running from a CR2032 Coin Cell battery

Bob Shankle
Expert 1180 points
Part Number: CC3200

Hi All,

Has anyone tried running a CC3200 from a coin cell battery?   I'd like to make a prototype where the CC3200 wakes up on a interrupt and phone's home (via the wifi interface.)  (Forget the load on the battery for the electronics generating the interrupt.)

I figure to get any reasonable battery life the CC3200 will need to be in hibernation mode for >95% of the time.

Does anyone have any performance data they wouldn't mind sharing (or warnings as to why it can't be done.)

thanks much,

Bob

  • 0
    Guru 79975 points

    Hi Bob,

    This is definitely not possible to use CR2032 as source for CC3200.

    We can take CR2032 from Energiser - datasheet:
    - it has 240mAh from 3V to 2V
    - max. peak current of CR2032 is about 30mA or less

    For CC3200 you need peak current about 500mA. This current is not able CR2032 battery provide. Maybe you can use some type of super-cap to cover this peaks, but due to leakage current of super-cap will be battery soon discharged. For example good super-cap from AVX 2.5F, it has leakage current about 25uA.

    For reasonable battery life with CC3200 you need use at least two AA battery or Li-Ion/Li-Pol. Small Li-Ion/Li-Pol will be probably able cover current peaks from CC3200.

    Jan

  • 0 in reply to Jan D
    Expert 1180 points
    Thank you so much for the quick and informative response!

    Bob