Recommended Output Filtering
The converter will achieve its rated output ripple and noise with no additional
external capacitor. However, the user may install more external output capacitance
to reduce the ripple even further or for improved dynamic response.
Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors.
Initial values of 10 to 47 μF may be tried, either single or multiple capacitors in
parallel. Mount these close to the converter. Measure the output ripple under
your load conditions.
Use only as much capacitance as required to achieve your ripple and noise
objectives. Excessive capacitance can make step load recovery sluggish or
possibly introduce instability. Do not exceed the maximum rated output capacitance
listed in the specifications.
This was on page 11 of the data sheet. Since I don't have an oscilloscope, I'll just have to try it both ways. Would you suggest maybe a 1uF ceramic cap in parallel with a 22uF ceramic cap on both the input and output side?
I'll be using it for a couple maxbotix XL EZ 1 ultrasonic sensors. I need a separate power supply for them because they can draw 100mA peak. There will also be a couple 600mA brushed DC motors on the circuit through a motor driver (TB6612FNG), but those will be run through a separate but identical regulator.