Adafruit TPS62827 3.3V Buck Converter Breakout - 3.3V Output 2 Amp Max

This small step-down converter based on the TPS62827 is super practical. It accepts input voltages of up to 5.5 V and provides a 3.3 V output with up to 2 A of current. It is excellent for powering circuits that require a hungry 3.3 V supply from a variety of battery or power supply options. This chip delivers up to 2 A of load current across the entire input voltage range of 3.4 to 5.5 V. While this isn't a huge range, it covers LiPoly batteries, 3 alkaline batteries, and USB power.

Great for your portable project, we made this pin-compatible with the LM1117-3.3 V TO-220 chip, allowing you to swap it out for better performance (90-95% efficiency!). There is also an enable pin; pull it low to completely shut off the output.

The Adafruit TPS62827 breakout runs at a fixed frequency of 2.2 MHz. Although the chip itself supports up to 4 A, we found that around 2 Amps was a good maximum for constant current draw, with 3 Amps for temporary peak current draw. We used a double-sided PCB made from 2 oz copper.

Comes with a fully assembled and tested breakout board. A header for plugging into a breadboard is also included.