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UCC3918 Startup Delay Time calculation schematics

Kazuhiko Ogawa
Intellectual 985 points
Other Parts Discussed in Thread: UCC3918

Hallo,

Could you please let me know the calculation schematics for the startup delay time of the UCC3918?
The UCC3918 can set the startup delay with external RC circuit connected to /SHTDWN pin, I think.
Is the startup delay time defined by RC(SD) time constant estimation and shutdown threshold = 1.1V(min) and VIN?
I cannot find the schematics for the startup delay time.

Best Regards,
Kazu Ogawa

  • 0
    TI__Mastermind 42795 points

    Is the startup delay time defined by RC(SD) time constant estimation and shutdown threshold = 1.1V(min) and VIN?

    Yes, this is correct.

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