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LM3880: Sequencers Forum

user5020677
Prodigy 20 points
Part Number: LM3880

Hello,

I have a question regarding the LM3880 PSpice model from TI.

So far, I have been able to downloaded the associated SPICE model, open and view the model, and place the LM3880 part into PSpice. I can run a PSpice simulation without errors. 

My problem is: 

The flag voltages stay at 0 Volts. I first apply Vcc = 6V followed by applying EN = 3.3V. FLAG 1,2,3 all stay low at 0V. No sequencing or any kind of operation is apparent.

How can I get this models working?

I've attached some pictures to help illustrate my issue.

Thanks

  • 0
    TI__Intellectual 1760 points

    Hello

    I checked on my end and the model works correctly. Please note that the flags are open drian connected, which means you have to connect the other end of the resistors to a higher voltage to work.

    Regards

    Ranjani