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LM5023: LM5023

Part Number: LM5023

I would like to know how to use tha QR pin.

Rated values of QR pin are 4mA negative injection current maximum and -0.3V negative input voltage maximum.

If resistor divider on the auxiliary winding connect to the QR pin , the negative voltage is much larger than -0.3V I think.

Is there any divice inside IC to keep the negative voltage smaller than -0.3V ?

And one more question.

IQR should be chosen in the range of 1mA to 4mA written in the manual.

But the IQR is less than 1mA at the minimum input voltage on the design example in the manual.

Please inform me.

Thank you and Best regards.

TAKASHI