You only have about 5.8uF downstream of the current limiter so all of that good stuff in the datasheet is useless. You are charging an inductor, not a capacitor.
It also seems like this chip is upstream of a reverse-polarity-protection diode. It is not rated for negative voltage so there is no protection.
What is supplying this 12V that needs such a large capacitor (2200uF) on the input?