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TPS552872-Q1: Inquiry Regarding

Manuel Miranda
Prodigy 20 points
Part Number: TPS552872-Q1

Tool/software:

I hope this message finds you well.

 

I’m working on the TPS552872QWRYQRQ1, and I have a few questions regarding some component recommendations in the datasheet.

 

In the datasheet, a 100kΩ resistor is recommended for the RF_UP pin. Would there be any issue if I use a 13kΩ resistor instead?

 

I am considering leaving the EXTVCC and CC pins floating. From what I understand, this should not cause any issues—could you please confirm?

 

Regarding the CDC pin, I am unsure whether it can be left floating or if it must be connected with a resistor (See image). Could you clarify this point?

 

Thank you in advance for your support

  • 0
    TI__Genius 16960 points

    Hi,

    Our AE Mulin may give you feedback these two days. Thanks for your patience.

    Aurora

  • 0
    TI__Genius 15090 points

    Hi Manuel,

    Thank you for reaching out.

    Manuel Miranda said:
    In the datasheet, a 100kΩ resistor is recommended for the RF_UP pin. Would there be any issue if I use a 13kΩ resistor instead?

    No issue. Vout_CDC will change because it is proportional to upper resistor.

    Manuel Miranda said:
    I am considering leaving the EXTVCC and CC pins floating. From what I understand, this should not cause any issues—could you please confirm?

    Yes, there is no issue.

    Manuel Miranda said:
    Regarding the CDC pin, I am unsure whether it can be left floating or if it must be connected with a resistor (See image). Could you clarify this point?

    If you don't need this function, you can left it floating.

    Regards,

    Mulin