This 4A capable PowerBoost 1000 can turn almost any battery voltage below 5.5V into a steady 5.2V to power your USB devices.
Connecting USB devices to a power source can be a little tricky, especially if that power source is a battery. Luckily Adafruit has created the PowerBoost 1000 which makes getting power to your USB devices easy!
The PowerBoost accepts any voltage as low as 1.8V and as high as 5.5V and outputs a constant 5.2V. The extra 0.2V adds a bit of headroom just in case you are using a long cable, adding an in-line diode, or consuming a lot of current. Even if your voltage dips, you should be safe from brown-outs during operation.
If your device requires a lot of current, fear not! The PowerBoost has the ability to provide 1A+ from as low as 2V with a maximum current draw of 4A. The heart of this little beast is powered by the TPS61030 boost converter from TI which comes with some cool extra features including low battery detection, synchronous conversion, excellent efficiency, and 700KHz high frequency operation.
Hey there's a typo on the back, it says TPS61090 but we really use the TPS61030 - the '90 is the 2A version, the '30 is the 4A version! We'll fix on the next PCB run. Read more about the TPS61030 boost converter from TI here.