The PowerCell board is a single cell LiPo boost converter (to 3.3V and 5V) and micro-USB charger in one. The board comes with a JST connector for a single cell LiPo battery, a micro-USB connector for the 5V charge input, and selectable 3.3V and 5V output pins (labeled ‘out’). There are also two charge pins broken out (labeled ‘charge’), so you can use another 5V power source to charge the batteries, if you don’t have a micro-USB cable.
We’ve also broken out the power-save and enable pins, so that you can have full control of the switching regulator. Keep in mind, if you keep your battery connected to the Powercell, it is recommended that you disable the switching regulator (pull EN low) in order to prevent the battery from discharging and reaching the under voltage cutoff on the battery itself. There is also an under-voltage lockout on the Powercell board which is tied to a solder jumper so that you can disable it if you like.
The micro-USB charger uses the MCP73831 and allows you to charge 3.7V LiPo cells at a rate of 100mA max. If you want to charge at a faster rate, you will need to connect a separate power supply to the pins labeled ‘5V’ and ‘GND’ under the label ‘charge’.
The boost converter is based on the TPS61200 from TI and has solder jumper selectable 5V and 3.3V output, and an under voltage protection of 2.6V (which can be disabled via solder jumper on the back of the PCB).
Note: This board does not have reverse polarity protection, so please be sure to recognize the polarity of your connections!
Dimensions: 1.03 x 0.95"
- MCP73831 Single Cell LiPo charger at 500mA
- TPS61200 Boost Converter
- Selectable output voltage 3.3 or 5V
- 5V @ 600mA max
- 3.3V @ 200mA max
- Undervoltage lock out at 2.6V (with disable jumper)
- Quiescent current, less than 55uA
- JST connector for LiPo battery
- micro-USB connector for charge power source
- Inductor: 4.7uH, 1.2A Sumida CDRH2D18
- Over temperature protection
This product is listed in:
Documentation and Resources:
- The Maker Revolution
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...
- Choosing Your Next LiPo Battery
As technology gets smaller and more powerful, wearables and portable devices are becoming more common in our everyday lives. Makers are looking to make projects portable and with that comes the need for high capacity batteries that are reliable, powe...
- Powerboost your LiPo Batteries
We're going to pick up where the LiPo Battery tutorial left off and look closer at the Adafruit Powerboost modules for charging your LiPos. We talked about the rules of using these batteries and how to make sure you don't set your project a light whe...
- Powering Portable Projects: Batteries
Want to make your project portable? We've put together a quick guide to get you up to speed on battery options and help you decide which batteries might be best for your project. Batteries are a whole different game to plug packs and benchtop power s...
- IoT Plant Monitor
So, my wife wanted to have some small plants in the house. I didn’t, so we compromised, and got some plants. The only thing is that neither of us remembers to water them, so I wanted to build a sensor array to monitor the moisture content of the soil, and notify us when they needed watering. We’ve got 3 plants, all fairly close to each other, and I wanted to create an IoT project so that it could send an email notifi...
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