Qwiic Boost

Qwiic Boost increases the Qwiic bus from 3.3V to 5V while still providing the target device with 3.3V I²C signals. This is a handy board for connecting technologies that still require 5V for running higher voltage mechanisms (like a DC fan) but have an internal processor running at 3.3V. We've seen this a lot with air quality sensors that use a fan to push air into a test chamber.

The 5V boost circuit is rated up to 100mA with 90% efficiency. For applications where the 5V device needs 5V I²C signals, a conversion circuit is provided with the board. A jumper is available to select between 3.3V (default) and 5V I²C signals.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

Documents:

• Eagle Files
• Schematic
• Hardware repo