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UCC2800: Error amplifier current limit range - 0.9V to 1.1V?

Jeff Krupp
Prodigy 60 points
Part Number: UCC2800

Hello.  I see the CS pin has a range of 0.9V to 1.1V range for current limiting operation, but this amounts to a large range of load current in the end product.  Am I missing something?  If not, is there a tighter tolerance chip that would limit the range better?

Thanks.

  • 0
    TI__Expert 6080 points

    Hello Jeff,

    The maximum amplitude of the CS pin is 1V; at this voltage the controller will start current limiting. The 0.9V and 1.1V are the values including factors like: the -55deg to 125deg spread of temperature, unit to unit variation, some hysteresis on the internal comparator etc.

    I hope this answer your question.

    Regards,

    Sonal