BQ25703A Programmable Regulator Module

Buck boost regulator module that supports 3.5V-24V input, charging 1-4 cell batteries, and programmable output from 4.48V to 20.8V

Alex Klimaj

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This small module incorporates everything needed for the TI BQ25703A programmable regulator. <br>This is the same regulator I used in LiPow.<br><br>[<a target="_blank" rel="noopener noreferrer" href="http://www.ti.com/product/BQ25703A">http://www.ti.com/product/BQ25703A</a>](<a target="_blank" rel="noopener noreferrer" href="http://www.ti.com/product/BQ25703A">http://www.ti.com/product/BQ25703A</a>)<br><br>### Some key features<br>- Charge 1 to 4 Cell Batteries From Wide Range of Input Sources<br>- 3.5V to 24V Input Operating Voltage<br>- I2C Programmable<br>- Output 4.48V to 20.8V in OTG Mode Compatible With USB PD Output 1.024V to 19.2V in Battery Charging Mode<br>- Output Current Limit up to 6.35A<br>- Thermal Shutdown Input, System, Battery Overvoltage Protection, MOSFET Inductor Overcurrent Protection<br>- Charge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid<br>- Currently, I have a driver in LiPow for this regulator. I will be improving on it and making it available 

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Fully assembled, tested, and up for sale!
Alex Klimaj • 09/17/2019 at 18:36 • 0 comments

I have finished assembling and testing the modules. They are now for sale on Tindie!

https://www.tindie.com/products/18093/
Progress!
Alex Klimaj • 09/15/2019 at 20:14 • 0 comments

This project has been sitting on the shelf for a few months now. PCBs arrived and I got very busy with client work. I've finally got a reprieve and time to build the boards. I started building 10 units today. If all testing goes well, I will put them up for sale on Tindie.