This LiPo charger was made to be perfect for prototyping. It has breakouted MicroUSB port which allows to use same connector for charging battery and communication over USB. Breakout is also compatible with breadboards. Screw terminals make it easier to connect different types of batteries without the need to solder.
Why DFN package?
Charger uses popular MCP73831 chip which can be found in SOT-23 package in many chargers. However, SOT-23 package can't dissipate enough power to charge battery with 500 mA current, it overheats. This charger, however, uses MCP73831 in DFN package. DFN package has thermal pad which dissipates enough power to guarantee 500mA charging current.
Why screw terminals?
Other chargers are usually equipped with standard JST connector. However, often you may want to charger a battery that has different connector or doesn't have connector at all. Then, instead of soldering you can just use screw terminals.
What to do with breakout?
None of the chargers provide USB breakout which makes it impossible to use the same USB port for charging and transferring the data. With USB breakout a battery can be charged and a communication with micro-controller can be done at the same time with just one USB port.
For electrical and mechanical specification, and 3D model, please visit my website: http://beastdevices.com/index.php/li-ion-charger
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My name is Andrejs Bondarevs and I currently reside in Sweden. I have been interested in electronics since I was a child. I got my Master's degree in Electronics couple of years ago. Currently I work in a consulting company i3tex AB as a Software and Hardware Engineer.
In my spare time I do some projects, mostly in the area of electronics and software. I share my most successful and finished projects on this website, because I thought that some people might be interested and they are. :) My most interest in the electronics area lies in the power and IoT applications. My biggest obsession is autonomous power systems.
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