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[FAQ] LM25118: Why can't operate when Vin is lower than 4V?

Part Number: LM25118

Hi team,

My customer used this device in their system but they need support Vin voltage low to 3.5V.

But currently they found when input voltage is lower than 4V, our device will be off.

Below is their circuit and please advise which portion we need to modify.

Thanks