Hi there!
we are using TPS7A4901 in this condition : Vin=14.4V~19V, Vout=12V, Iout=80mA. Css=CFF=10nF.
On page 17 of datasheet, it says Cout has to be larger than 2.2uF and Cout(max) should also be limited by equation(7) and (8). I am confused:
Why tss(CL) is 140us and Vout =2V in equation(8)? I thought Vout should be 1.2V as page 16 wrote...
And in my application, Cout(max) = 140us*500mA/12V = 5.83uF. This seems to confilcts with the requirement that "Cout could use 10uF for better PSRR"?
So how should I choose Cout?
Thanks!