Sometimes a power source may start higher than requirement and drain until lower than required. These regulators enable the use of stable DC power from a battery as it gets discharged below the regulated voltage allowing for more power to be extracted or less cells to be used.
Adjustable regulators are also available for when the regulated output is not a standard voltage.
This switching regulator uses the SEPIC topology to provide a regulated output voltage that can be higher than, the same as, or lower than the input voltage, making it great for applications with widely-varying power supplies and for battery-operated applications where the battery transitions fr... More Details...
The SparkFun Buck-Boost Converter is a handy power accessory board that allows you to fine tune the amount of power your project receives. This converter can take an input voltage of anywhere from 3-16V which can then be regulated to an output voltage between 2.5-9V. More Details...