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LM2901: Absolute Maximum Rating of Output Current

Shinichi Inoue
Guru 18791 points
Part Number: LM2901

Dear Specislists,

My customer is evaluating LM2901D and has a question.

I would be grateful if you could advise.

---

In our circuit, Pin1 (1OUT) draws a large transient current (approximately 350ns) when switching from Hi-Z to Low.

The peak value is 20.8mA, and the absolute maximum rating exceeds Io(max) = 20mA.

Tens of ns exceeds 20mA, is this acceptable?

Please let me know if there is a spec for the pulse width when exceeding 20mA.

---

I appreciate your great help in advance.

Best regards,

Shinichi

  • +1
    TI__Mastermind 46056 points

    Hello Shinichi,

    The output is internally current limited to about 12-15mA. This can be seen in figure 7-35 graph. This should not be a problem.

    If you are really concerned about the current, a series resistor can be added in series with the output to limit the peak current.

  • 0 in reply to Paul Grohe
    Guru 18791 points

    Hi Paul,

    Thank you for your reply.

    In this condition, there is no risk to damage.

    I will ask the customer to check if it works properly.

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi