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TLV62569: Delay time or deglitch time for current limit detection

Part Number: TLV62569

Hi, TLV62569 support team

The datasheet is not defined on the delay time or deglitch time for current limit detection. Could you show the design value or the actual value of the delay or deglitch time?

Thanks

Tamio

  • Hello Tamio,

    It is not mentioned in the datasheet, so I am not sure is there any delay defined for this device. Let me check it internally then I will get back to you.

    Thanks and Best Regards,

    Farheen

  • Hello Tamio,

    The delay time for current limit detection usually comes from propagation delay of the comparator until it can trigger the current limit. But in the datasheet of  TLV62569, it is not mentioned because it is using a higher inductor value 1uh or 2.2uH (less slope), so 20-30ns delay is not going to impact the current spec as much.

    (20-30ns should be the typical value for the delay)

    Just make sure of using the inductor with higher saturation current as compared to switch current limit.

    Thanks and Best Regards,

    Farheen  

  • Hi, Farheen,

    I have one more question.

    The current limit is defined only minimum value. Customer need the maximum current limit value to select an inductor. Could you show the maximum value to me?

    And also, according to customer evaluation, the current limit worked when the load current is 2.8A. It show that the current limit is approximately 3A.
    Could you share the normal-distribution of the current limit with me by the off-line?

    Thanks

    Tamio

  • Hello Tamio,

    Which package of TLV62569 your customer is using as it varies from package to package? Then I can look into the distribution for this parameter.

    Thanks and Best Regards,

    Farheen

  • Hi, Farheen,

    The parts number is TLV62569PDRL(SOT-563 package).

    Thanks

    Tamio

  • Hello Tamio, 

    I am sending you an email to share the information.

    Thanks and Best Regards,

    Farheen

  • Hello Tamio,

    As the query has been answered by email. I am closing thread for now. If you have any further question related to this thread, feel free to open it by commenting below.

    Thanks and Best Regards,

    Farheen

  • Hi, Farheen,

    I appreciate your support

    Thanks!

    Tamio