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LP8865Y-Q1: Inductor Selection

Part Number: LP8865Y-Q1

Tool/software:

Hello

I'm reading the datasheet "LP8865-Q1 Automotive Multi-Topology LED Driver with Inductive Fast Dimming" in the Buck-Boost application section at pag 27 I have troubles underdstanding how they obtain ILmax 1,041A starting from ILED = 0,5A Vin =16V; Vout 15V and efficency= 0.8 :

"In this design, VIN(max) = 16V, VOUT = 15 V, ILED = 0.5 A, considering the efficiency as 0.8, IL(max) = 1.041 A"

Anyone can give me an hit?

Thanks in advance

Luca