Implementing a LM2677 SMPS, the reference recommends 4 identical 10uF input caps for my design. I understand some of the reasons you may want to use multiple capacitors instead of a single one, and the datasheet has this note:
In some cases multiple capacitors are required either to reduce the ESR of the output capacitor, to minimize output ripple (a ripple voltage of 1% of Vout or less is the assumed performance condition), or to increase the output capacitance to reduce the closed loop unity gain bandwidth (to less than 40 kHz).
However I'm wondering if it's just an old reference design and newer capacitors can achieve these same goals with a single capacitor. I'd like to preserve space with a single cap and I've had some problems with tantalums failing in the past.
For instance, why not use a single low ESR high ripple aluminum polymer like this one: 25SVPF47M