In my aplication I need to use a galvanic isolator DC/DC convertor. One parameter in the datasheet (of DC/DC convertor) specifies that maximum capacitve load is 220uF and maximum mA output is 200

However in my application I need about 900uF.

Can I use a DC convertor ---capacitor 100uF--- and then LDO with current limiting (at 150ma) and use as much capacitance I want after the LDO ?