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LMQ66430: Output voltage selection.

Kengo.Y
Guru 10565 points
Part Number: LMQ66430

Tool/software:

Hi team,

I'd like to know about output voltage.
How does it determine the output voltage is fixed or ADJ?
Could you tell me the structure of LMQ66430?



BR,
Kengo.

  • +1
    TI__Genius 12885 points

    Hello Kengo,

    The LMQ66430 determines whether the device is operating with a fixed or adjustable output by sensing the resistance of the feedback path during startup. Please refer to section 9.2.3.2.1 of the datasheet: https://www.ti.com/lit/ds/symlink/lmq66430.pdf

    To ensure the device regulates properly, make sure to follow the recommendations in the datasheet when sizing the feedback resistors for an adjustable output.

    If you are using a fixed output voltage, then FB can be tied directly to the output capacitor.

    Best regards,

    Ridge