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MC33063A: Maximum frequency MC33063ADR

Part Number: MC33063A

Hi Team,

Confirming this for our customer:

The customer applies power (5V) to pins 6, 7, and ground pins 2, 4, 5, between pin 3 and ground we connect a 1nF capacitor.
At pin 3, they have a frequency of 52 kHz, (in datasheet 42 kHz maximum at 1nF ). Is frequency 52kHz at 1nF is normal for this IC?

Thanks,

Jonathan

  • Hi Jonathan,

    Thanks for reaching out with your question and for considering the MC33063A in your design.

    The maximum is specified in the datasheet to be between 34kHz and 42kHz. How is the customer measuring the frequency? Can you please post the waveform?

    Also please feel free to reach me through email.

    Thanks,

    Garrett