Electronut snapVCC 9v to 3.3/5.v PSU
What is snapVCC?
snapVCC is a highly portable and convenient power supply for your electronics projects. It’s designed to fit right on a 9V battery and give you 3.3V or 5V power wherever you need it.
What can you do with snapVCC?
Many circuits require a regulated 3.3 or 5 volt power supply. The 9V battery is an easily available power supply option. A common way to power circuits using a 9V battery is to use a Linear regulator IC circuit to drop the voltage down. snapVCC eliminates this additional circuit by putting the regulator right on top of the 9V battery.
Also, since snapVCC uses a buck converter, it’s more efficient than using a linear regulator.
- Texas Instruments TPS560200 buck converter with 500 mA output current
- 3.3 V / 5 V output, switchable via jumper
- P-MOSFET for reverse polarity protection
- Power indicator low power LED
- Tiny form factor, sits on top of a 9V battery
- Power headers are standard .1” pitch
snapVCC uses a buck converter for efficient regulation of battery voltage. snapVCC has an LED power indicator, reverse polarity protection, and you can switch between 3.3V and 5V by just switching a jumper.
snapVCC is an Open Source hardware project. All design files for this project can be found on the electronut GitHub repository.
snapVCC is successfully crowdfunded project.
What's new in version 2.1?
We've made the following tweaks to snapVCC based on customer feedback:
- A tiny switch for 3.3/5 V instead of the clunky jumper
- A convenient trace cut option for the power LED to conserve battery
- 90 degree output headers for a flat profile
- LED is at buck output, not batt input