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TPS650864: How to Tie Unused LDOA1 regulator

David Winkler
Prodigy 20 points
Part Number: TPS650864

Tool/software:

We are using the TPS6508640 part and are not using LDOA1 though the OTP sequence enables it. Do I have to add the output filter cap if it is not used? Any other connection consideration?

  • 0
    TI__Expert 6225 points

    Hi David,

    Thank you for reaching out on e2e.

    Correct, if any rail is part of the default enable sequence, we need to populate both input and output components as normal and then the rail can be left un-used, otherwise PMIC would fail to powerup.

    Sathish