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LM5022: Disconnect CS pin - Can CS pin be pulled to ground or disconnected if not used?

Lucas Wassenius
Intellectual 864 points
Part Number: LM5022

Hi Team,

If you do not need the internal current limiter of LM5022,can CS pin be left NC or pulled to GND?
This to save footprint and cost.

Kind regards,
Lucas

  • 0
    TI__Mastermind 21720 points

    Hi Lucas, 

    Thanks for reaching out with your question and for considering the LM5022 in your design .

    The LM5022 should still have the current sense resistor even if the current limit feature is not needed. The main reason is that the control loop of the LM5022 is peak current mode control. Removing the current sense resistor will change the control loop and the design might not be stable

    Please let me know if you have any questions.

    Thanks,

    Garrett