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LM3478: Will it shutdown if RFA = 180k?

Andrew Massey
Prodigy 40 points

Part Number: LM3478

Tool/software:

Hi,

Page 15 of the LM3478 datasheet shows a shutdown circuit, and shuts down if the 10k can pull up to a rail of 1.4V or higher...however, is this still the case if the RFA resistor is as high as 180k?

  • 0
    TI__Guru 69175 points

    Hello Andrew,

    What do you mean with RFA resistor? If this is the resistor on the FA/SD pin, the device needs less current to pull this pin high, so I do not see an issue with having a bigger resistor there.

    Best regards,
    Brigitte