Hi,
I am designing a buck-boost led driver and I have a question about the output capacitor. I see in the datasheet in the typical information section that Cout is only connected between LED- and LED+ but in the typical application Cout is connected between LED- and LED+ and there is also a capacitor (C12) of 4.7uF connected from LED+ to gnd. I can't find any mention of the capacitance required to be connected between LED+ and gnd.
For my application, I calculate a minimum Cout of 27uF so I'll use 3*10uF between LED+ and LED- but my question is how much is required between LED+ and GND ?
