This little buck converter based on the TPS62827 is super handy, taking up to 5.5V input and providing a 3.3V output with up to 2A current.
It's great for supplying power to hungry 3.3V voltage circuits from a range of battery or power options. This chip provides up to 2 Amp load current across the entire input voltage range of 3.4 to 5.5V. It's not a huge range but does cover LiPoly batteries, 3 alkalines, and USB power.
Great for your portable project, Adafruit made this "pin compatible" with the LM1117-3.3V TO-220 chip so you can swap it in for better performance (90-95% efficiency!) There's also an ENable pin, tie it low to shut down the output completely.
The Adafruit TPS62827 Breakout runs at 2.2-MHz fixed-frequency. Even though the chip itself supports up to 4A, they found that 2 Amps or so was a good max to stick to for constant current draw and 3 Amps for temporary peak current draws. Adafruit did use a 2 oz copper double-layer PCB.
If you need a wider input range, check out the 3.3V output MPM3610 breakout with up to 20V input!
Comes with a fully assembled and tested breakout board. Adafruit also include header to plug it into a breadboard.
We no longer stock this product
It's sad to say goodbye but sometimes we have to retire products to make way for new things.
You may still be able to buy this product directly from our friends at Adafruit - check out their website!