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  • Resolved

LM25066A: Use for monitoring only - no hot-swap FET

Intellectual 400 points

Replies: 3

Views: 56

Part Number: LM25066A

I have an application where I'd like to use the LM25066A without a hot-swap FET and only use the monitoring functionality.

Is this recommended by TI?  If so, what should the connections be for the GATE, OUT, TIMER, PWR, CL, CB, /RETRY pins?

If not, why not?

  • Hi Christopher,

    You can consider using LM25056 instead of LM25066 if you intend to use only the telemetry functionality.

    Here is the link to its datasheet https://www.ti.com/lit/ds/symlink/lm25056.pdf

    Regards,

    Praveen

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  • In reply to Praveen GD:

    Hi Praveen,

    I do not want to use the LM25056 because the TI website indicates that it is not recommended for new designs.  Furthermore, I'm using the LM25066A as a hot-swap controller in a couple other locations in the design, so I'd like to use the same part to minimize the BOM parts count.  Is there any reason I can't use the LM25066A?

    Thanks,

    Chris

  • In reply to Christopher Arntzen:

    Hi Chris,

    There is no reason why you shouldn't use LM25066 for telemetry alone. You can test the EVM with below settings before implementing it on your system.  

    • Use sense resistor. Instead of Mosfet, short its terminals. 
    • Gate can be left floating.
    • Vout can be connected to output rail as usual. You can also monitor Vout via telemetry.
    • UVLO,OVLO,Timer, CL, CB and RETRY/ can be connected to GND.
    • Connect a resistor from PWR to GND.

    Regards,

    Praveen

    ------------------------------------------------------------------------------------------------------------------------------

    Please click "This resolved my issue" button if this post answers your question.

    To find latest information on efuse and Hotswap, visit  www.ti.com/PowerSwitch

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