Breakout boards you find on Sparkfun or Adafruit can only fit a chip. Usually these chips require decoupling capacitors, pullups resistors or the like. This board allows you to add those extra passives onto the breakout itself, making breadboard deployment a snap.
This is also a great first 0402 SMT soldering project. Put together a few regulators with 0402 decoupling caps on these boards and you will be a soldering master!
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