TPS1663: SHDN input pull-up

Aziz Demirezen

Part Number: TPS1663

Tool/software:

Hi,
according to TPS1663 functional block diagram active-low SHDN pin has an internal pull-up of 1MOhm to 2.7V.
Is this enough to keep the device enabled? or does it require an external (stronger) pull-up (e.g. to 5V)?
Regards,
Aziz

4 months ago

0 Aziz Demirezen 4 months ago

Prodigy 10 points

I've just seen that your eval board doesn't have an external pull-up resistor either, so it should be sufficient, I assume.
TPS16630-32EVM Evaluation Module for TPS1663x (Rev. A)

0 Amrit Jit 4 months ago in reply to Aziz Demirezen

TI__Genius 12001 points

Hello Aziz,

Yes, SHDN pin doesn't require external pull up to keep it enabled.

If you wish, you can keep the pin floating.

Thanks

Amrit

0 Aziz Demirezen 4 months ago in reply to Amrit Jit

Prodigy 10 points

Please add this info also to the datasheet. It doesn't even mention about the internal pull-up, which is only visible on the block diagram ;)

0 Amrit Jit 4 months ago in reply to Aziz Demirezen

TI__Genius 12001 points

Hello Aziz,

Sure. Will add in next revision of datasheet.

Thank you for your suggestion.

Amrit

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TPS1663: SHDN input pull-up