TPS3808 - Can SENSE be powered without Vdd?

Leslie Chataway

Mastermind 20980 points

Question/Problem:

Can SENSE be powered without Vdd?

Answer:

Product team replied that this was possible.

over 17 years ago

0 George Hong over 14 years ago

Prodigy 70 points

When SENSE is powered up before VDD, is there any current leakage path from SENSE to VDD or any other pin?

0 Bill Stokes over 14 years ago in reply to George Hong

TI__Expert 8890 points

Hello George,

I am sure that there is some leakage current even though the part is powered off but we have not characterized that current. Of course with the part powered "on" that pin draws +/-25nA. Would you be able to check this out using one of TI's EVMs?

Regards,

Bill

0 George Hong over 14 years ago in reply to Bill Stokes

Prodigy 70 points

Can TI take this action item and check? If necessary, I'll need to be provided with an EVM.

0 Bill Stokes over 14 years ago in reply to George Hong

TI__Expert 8890 points

Hello George,

I can order an EVM, check it out, and then send it to you. Or, I can have it sent directly to you. Either way I'll need your mailing address.

Bill

Power management

Power management forum

TPS3808 - Can SENSE be powered without Vdd?