The LiPower board is based on the incredibly versatile TPS61200 boost converter. The board is configured to be used with a LiPo battery, has solder jumper selectable 5V and 3.3V output, and an under voltage protection of 2.6V. However, the board can also be used as a general purpose buck and boost regulator with an input voltage as low as 0.3V (default UVLO is 2.6V). With such a low input voltage and quiescent current , the board also works well in energy harvesting applications that use low input voltages. Project description, more information and ordering can be found at https://www.sparkfun.com/products/10255 Datasheet: http://www.sparkfun.com/datasheets/Prototyping/tps61200.pdf UVLO Modification: http://www.circuitsathome.com/dc-dc/tps61200-board-modifications-part-1-changing-undervoltage-lockout