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BQ24090: Can the BQ24090 always work without a battery?

Part Number: BQ24090

Dear TI team :

        I have a new project considering using BQ24090.. At the same time, some of our customers will purchase this product

without battery, but only use USB. I checked the data sheet of the BQ24090. Feedback Vout can be output when Battery Detect

Routine , but can Vout always output (Like 4.2V) without battery?