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ISO7721: UVLO function

Ryuji
Guru 20090 points
Part Number: ISO7721
Other Parts Discussed in Thread: ISO7821

Hello,

ISO7721 has UVLO function. There is no UVLO function in ISO7821.
Could you please let me know the output state when UVLO operated? Is it Hi-Z?

Is there a delay from when the Vcc exceeds the UVLO rising threshold until the output enable?

Best Regards,
Ryuji

  • 0
    TI__Intellectual 2855 points
    Hi Ryuji,

    The output state of ISO7721 follows the truth table ' Table 2' on page 18 of data sheet. And FYI even ISO7821 has UVLO feature integrated.

    Most modules in the device are powered up with the VCC ramp up and the delay between voltage reaching UVLO threshold and enable is highly dependent on the VCC ramp rate and cannot be quantified.


    Regards
    Tejas