5 Volts from a single AAA

Powering a Breadboard

I got tired of having to wire up a a linear regulator, filter cap and a battery box just to generate 5 volts for my latest breadboard project.  So, inspired by this product:

http://www.sparkfun.com/commerce/product_info.php?products_id=8466

I designed a small PCB that generates 5 volts from a single AAA cell using a DC to DC boost switching supply.  The circuit is taken from the app note for the NCP1400A IC, which is here:

http://www.onsemi.com/PowerSolutions/product.do?id=NCP1400A

I designed the board to straddle the top edge of the breadboard and uses 8 pins (4 on each side) to connect to the breadboard's power supply and also hold the PCB in place.  A slide switch powers it on and off.  The result is shown below:

A close up of the assembled PCB is shown here:

Here's the layout of the top layer of the PCB:

And here's bottom layer (with the top layer showing through):