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TPS74401: TPS74401

Part Number: TPS74401

Hi

At the data sheet it is written that "VBIAS must be at least VOUT + 1.62 V." at paragraph 8.2.2

But at paragraph 9 It is written "the bias rail is at least 1.62 V higher than the input supply"

Witch one is right?

i want to use Vin 1.8v Vbias 3.3v Vout 1v.

Is that OK or there is degradation in performance?