TI CC3200 LP battery question

HENG MA

Expert 1020 points

Other Parts Discussed in Thread: CC3200

Hi All

I try to use a 9v battery and down to 3.3 v using potential meter to give power to CC3200 as external source.

However, when I connected to the board. It seems not working.

May I know what happened?

Thanks

Heng

over 10 years ago

0 HENG MA over 10 years ago

Expert 1020 points

Hi I think this is due to the small current. Can this be solved using regulator such as TLV1117-33CDCYR?

Thanks

Heng

0 Vivek Dham over 10 years ago in reply to HENG MA

TI__Guru 58035 points

Hello Heng,

Yes it would work if you use a regulator to provide the 3.3V supply. But using an LDO would cause lot of power wastage, if you want better efficiency you should use an siwtching regulator (a buck DCDC from 9V to 3.3V). That would make sure the current from the battery is low.

Regards,

Dham

0 HENG MA over 10 years ago in reply to Vivek Dham

Expert 1020 points

Dear Dham

Thanks for that.

Heng

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