Improve current limit on boost converter
These chips seem to all operate in the same  basic  way . Hardswitching peak current mode . Things are not good for a boost at high boost ratios and things are not good for a buck at high stepdown ratios .Fortunately Linear tech have pinned out a RT pin that will allow you to reduce frequency .Increase R2 and L1 and C8 to get your product out the door . Many of these chips do not pin out frequency which is bad .The use of a diode pump can get you out of a hole if you must use the chip.