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LMV772: Absolute max rating (V+)

User
Prodigy 60 points
Part Number: LMV772

Hello team,

We are using LMV772QMMX in our application and the op-amp is supplied by a 5V regulator. During a failure condition for the regulator, we may observe an overshoot for a very small duration (~80ns) on the VDD5 line.

As per the datasheet, the pin is rated for max (5.75 + 0.3)V. Could you please provide feedback how much overshoot voltage on the V+ supply line the op-amp is capable of handling for a few nanoseconds?

 Thank you!

  • 0
    TI__Expert 8145 points

    Hello,

    The abs max supply voltage rating is 5.75V. If this is configured with a single-supply and V- connected to ground, the abs max voltage that can be applied to the V+ pin is 5.75V. Any voltage beyond the absolute maximum ratings may cause damage to the device. If your circuit may violate this condition in a failure mode, it is recommended to clamp the voltage at the supply pin using a TVS diode.

    Thanks,

    Zach

  • 0
    TI__Guru 61340 points

    As you stated, the LMV772 absolute maximum rated supply voltage is 5.75V.  This is controlled by the fabrication process used to manufacture the product (no overshoot is allowed even for a very short duration) and thus may only be exceeded at your own risk (TI does NOT guarantee anything above 5.75V).  The rating of (V+)+0.3V applies ONLY to the input pins BUT not supply pin. The voltage on the input pins may be exceeded by at least 0.3V; in case the voltage on the input pins is more than 0.3V beyond supply voltage, the input current must be limited to 10mA or less.