TPS543C20: MODE pin resistor tolerance

K. Sasaki14

Guru 10200 points

Part Number: TPS543C20

Please let me know the resistor value tolerance of MODE pin.

I understand tolerance of 1% or less are recommended in datasheet.

However our customer used 22.7k ohm though 23.7k ohm have to be used. Is this value allowed?

How much tolerance is allowed for MODE resistor in fact?

We would like to know reference value even if over 1% tolerance is not guaranteed.

Best Regards,
Kohei Sasaki

over 6 years ago

0 JohnTucker over 6 years ago

TI__Guru**** 191445 points

Sasaki-san,

That is about 5 % variation. Does the circuit work as they expect? I can check the actual tolerance of the pin function after the holidays.

0 K. Sasaki14 over 6 years ago in reply to JohnTucker

Guru 10200 points

John-san,

Thank you for your reply.
I'm looking forward to your reply after the holidays.

Best Regards,
Kohei Sasaki

0 Henry Nguyen over 6 years ago in reply to K. Sasaki14

TI__Intellectual 2460 points

Hi Kohei,

I sent you the Excel design tool before. Worksheet "Sheet4" has that table tolerance for the pinstrap resistors.

Kit

0 K. Sasaki14 over 6 years ago in reply to Henry Nguyen

Guru 10200 points

Kit-san,

Thank you for your answer.
I could check the tolerance on the Excel sheet.

Best Regards,
Kohei Sasaki

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TPS543C20: MODE pin resistor tolerance