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UCC23513: why we specify the maximum average input current to 25mA?

Part Number: UCC23513

Is it that we calculate through some equation to get the result?

Or it’s guaranteed through test, for example, when every socket is produced, we will add 25mA to the input diode, and those who can pass the test will finally go to market, those who doesn’t pass the test will be discarded.

Thanks.

  • Hi, Howard,

    The 25 mA is the specification that we designed the device to. The bond wires, metal tracks, etc, are designed only for this much current. And, since it is an absolute maximum rating, it should never be used. See the note below from the datasheet:

    Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability

    The recommended operating conditions are 7-16 mA. All circuit designs should be done to fall within this range.