TPS61060: Sizing sensing resistor Rs with TPS61060

There is no any clue how to calculate Rs in datasheet for TPS61060 (SLVS538B –NOVEMBER 2004–REVISED DECEMBER 2014).

I saw in other similar devices like tps61160a.pdf Rset= Vfb/Iled

Can I Use it ?    My application is similar to “Typical Application” shown on first page and on fig10 of TPS61060 datasheet, using TPS61060DRBR, 22uH inductor, driving only 1 LED 40mA, 5-8V and acc. to above formula receive Rs = 6.25 Ohms?

Thanks