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LM2577: What if Vin > Vout on LM2577

Part Number: LM2577

Hi,

I have a circuit where I use LM2577 to boost Vin to Vout (24V).

In most cases Vin < Vout and all is according to spec.

However there might be situations where Vin >= Vout.

So will Vout = Vin - V_diode (from the schottky diode used in the DCDC)?

And will LM2577 be "happy" with such a condition or will it take damage?