LM3481: State of FA/SYNC/SD pin if left floating

Jonathan Geronga

Part Number: LM3481

Hi Team,

Our customer would like to know what would be the state of FA/SYNC/SD pin if left floating?

Looking forward to your answer.

Thanks!

Jonathan

over 5 years ago

0 Youhao Xi over 5 years ago

TI__Guru* 78400 points

Hi Jonathan,

Thank you for posting. This is pin is not supposed to be left floating. But let me check with our design to see what would occur when it is floating.

Thanks,

Youhao Xi, Applications Engineering

0 Yinsong Cai1 over 5 years ago in reply to Youhao Xi

TI__Expert 7450 points

Hi Jonathan,

I tested it on the EVM and it is 0.94V floating.

But as Youhao said, It is wrong to leave it floating.

Thanks,

Yinsong

0 Jonathan Geronga over 5 years ago in reply to Yinsong Cai1

TI__Expert 7930 points

Thank you for the support Yingsog and Youhao.

I will let the customer informed about this and will update you if there are any other questions regarding his application.

Regards,

Jonathan

0 Youhao Xi over 5 years ago

TI__Guru* 78400 points

Sorry Jonathan, please discard my previous reply. I was trying to reply to a different thread and mistakenly copy and pasted my reply to yours.

I am going to delete it, if I can. But you can still receive a notice of my previous wrong reply.

Thanks,

0 Youhao Xi over 5 years ago in reply to Youhao Xi

TI__Guru* 78400 points

Hi Jonathan,

May I assume the issue is resolved, and we can close it here? Please feel free to add an new post to re-open this thread.

Thanks,

Youhao

0 Jonathan Geronga over 5 years ago in reply to Youhao Xi

TI__Expert 7930 points

Hi Youhao,

I did not anymore receive an update with our customer.
I will now resolve this thread.

Thanks for the support team.

Regards,

Jonathan

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LM3481: State of FA/SYNC/SD pin if left floating