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TLV9061: Detail of abnormal behavior concerned with power supply failure

shinichi miyano
Prodigy 190 points
Part Number: TLV9061

Hi team!

Could you please let me know the behavior of your product in following cases?

Case1:
The IN+ and IN- pins are entered the signal with Voltage from 0.5V to 5.0V, without power supply. (V+ = V- = GND))
If the device will be receive damage, please let me know the detail of the damage mode?
Case2:
The power supply voltage is over absolute power supply voltage. it means that "V+ is over 6V and V- is same to GND".
There is the description as a "permanent damage" on the datasheet, what does it mean the "permanent damage"?

Best Regard

  • +1
    Guru 243110 points

    There are ESD protection diodes between the inputs and the power rails. An out-of-range voltage allows a current to flow into V+; this can burn out the diode and anything nearby on the die. Even if the current is limited (see footnote (2) in the absolute maximum ratings), that current can also raise the V+ voltage and partially power up any devices connected to it.

    Voltages above 6 V can break down the isolation between components on the die. Usually, the isolation between the gate and the channel of the internal MOSFETs is the weakest part. Even if the isolation does not break down immediately, it will be degraded by electromigration caused by the strong electric field; a typical symptom is increased leakage current.