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LM3881: FLAGx pin rating

Part Number: LM3881
Other Parts Discussed in Thread: LM3880

Hi, team.

Is it possible to use 10 kΩ for the pull-up resistor of the FLAG terminal of the LM3881?

What is the current rating of the FLAG terminal? Is it 50 mA like the LM3880?

Best Regards,

  • If you look at the figure 7(Flag voltage and Current). 10Kohm is fine for LM3881 since it can still drive the output low with 10Kohm. but you need to check the device that Flag is connected to. does it have internal pull-up or pull-down? will 10K work it.

    Regards

    Yihe