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TPS92662-Q1: What is the power sequence of VCC and LEDs

Part Number: TPS92662-Q1

Hi team

I would like to ask that what is the power sequence of VCC and LEDs. I have understood that the pre-stage buck should power the LEDs after the 92662 internal LDO output VCC keep stable for a while. I want to know what is the time requirement "for a while", could you please share some comments or suggestions that  regarding this 5V keeping stable, is there a minimum interval time between it and the LED's light up? Need your recommendation and suggestions for the time value, thank you.