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ARodr.13
Associate
Jul 27, 2022 8:00 PM UTC
Solved

What is the maximum voltage that could be applied to the INH pin of the LD29300 regulator that will cause no damages to it?

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    MasterT
    MasterTBest answer
    Lead II
    Jul 28, 2022 12:19 AM UTC

    I see in data sheet this line:

    IINH Control input current TJ = -40 to 125°C, VINH = 13 V 5 10 μA,

    Usually, control voltage is in the power line limits, GND < Vinh < Vcc. To be safe, put a resistor in series, 10-100 kOhms - it will protect both ends, power regulator against over-voltage, and control circuit in case failure of the LDO.

    2 replies

    MasterT
    MasterTBest answer
    Lead II
    Jul 28, 2022 12:19 AM UTC

    I see in data sheet this line:

    IINH Control input current TJ = -40 to 125°C, VINH = 13 V 5 10 μA,

    Usually, control voltage is in the power line limits, GND < Vinh < Vcc. To be safe, put a resistor in series, 10-100 kOhms - it will protect both ends, power regulator against over-voltage, and control circuit in case failure of the LDO.

    ARodr.13
    ARodr.13Author
    Associate
    Jul 28, 2022 1:11 PM UTC

    Thank you so much, MasterT!