What actually limits the maximum "External output capacitance" stated to be 2000uF in the data sheet?
Too high output capacitance will draw too much current on start-up and the over-current protection kicks inn. This can be adjusted with the Slow Start pin. The data sheets has a table showing values up to 9.8ms. Could this be set higher? If so, could the maximum capacitance be higher than 2000uF? Could e.g the SS be set to 20ms and the output capacitance be 4000uF?