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LT8609A regulation when Vin < Vout

Dear ADI Engineering Support,

I'm planning to use the LT8609A in a battery application and have a simple question. What happens to the regulator when the input battery discharges close or below the programmed output voltage? Does the chip keeps regulation in this case as well, and so the output voltage follows the input supply with a minimum dropout? Thanks for your feedback in advance.

Best Regards:

Tom Ledeczi