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LM22674: Vin_min requirement

Part Number: LM22674
Other Parts Discussed in Thread: TPS560430


I want to use LM22674 regulator in my design to convert 9V from a battery to 5V. I calculated the Vin_min as per datasheet and and a value of 7.6V for I_out = 500 mA. But when simulated in webench, its taking Vin till 6.5 V. Since it is battery sourced, cutting off supply at 7 V is like wasting the power left in battery. Can you please help me out here? What should be the minimum input voltage for V_out = 5V?

Thank you!