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LM25066A/about SCA,SDA,SMBA pins

Tsukui Yusuke
Guru 21930 points
Other Parts Discussed in Thread: LM25066A

Hi,

Could you tell me about LM25066A SCA and SDA,SMBA pin?
Is the pull-down resistance set up by these pins?




Best Regards,
Yusuke / Japan Disty

  • 0
    TI__Genius 12621 points

    Hi Yusuke,

    Do you mean pull-up resistance?

     

    The LM25066A does not have internal pull-up resistors. These pins require an external pull-up supply.

     

    They may be used with pull-up resistors (such as 10K) and tied to the Vdd supply of the IC.

     

    The EVM has a placeholder for 10k resistors to be installed if one wishes to power off of Vdd:

     

    (Page 18, RP1, RP2, RP3)

     

    This is also described in the datasheet, page 19, "VDD Sub-Regulator" :

     

     

    Thanks!

    Alex

  • 0 in reply to Alex Triano
    Guru 21930 points

    Hi Alex-san,

    Thank you for your kind support.
    It's just as you said.
    Customer wanted to know the resistance of internal resistors.

    Best Regards,
    Yusuke / Japan Disty