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LMR23630-Q1: Fixed switching frequency min and max value

Part Number: LMR23630-Q1

Hello all,

I could find min minimum 340kHz and maximum 460kHz switching frequency at 400kHz fixed frequency.

What is the meaning of min and max of fsw? Is this meaning the frequency can be changed from 340 to 460?

Can we calculate the frequency at light load PFM?

Thank you

  • Hi William,

    Yes, the fixed switching 400KHz has tolerance and variation range over 340KHz--460KHz, this doesn't mean the switching freq will change during operation.

    It works more like hysteresis mode at light load condition, sleeping time depends on the switching pulse number at wake up and load current, so it's hard to calculate the operation freq, you may apply one EVM to test it at your application conditions.

    B R