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square inch power muxer

basically my 3v3 regulator + lipo charger power muxer combo from the lameboy

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Battery charging up to 500mA and powering any 3.3V project up to 600mA - uninterrupted 3.3V, just plug in 5V to your liking.

Battery charging up to 500mA and powering any 3.3V project up to 600mA

pwr.sch

Eagle schematic file

sch - 521.52 kB - 09/20/2018 at 10:53

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pwr.brd

Eagle board file

brd - 95.09 kB - 09/20/2018 at 10:53

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pwr.pdf

schematic as pdf

Adobe Portable Document Format - 16.67 kB - 09/20/2018 at 10:53

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Archive.zip

GERBER files

Zip Archive - 40.57 kB - 09/20/2018 at 10:53

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  • 1 × TPS2113 Power Management ICs / Power Supply Support
  • 1 × MCP73831 Power Management ICs / Power Supply Support
  • 2 × 4.7 uF 0805 capacitor
  • 2 × 1uF 0805 capacitor
  • 1 × USB micro plug connector

View all 15 components

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Discussions

Jarrett wrote 09/07/2018 at 22:44 point

Woah, I like the TPS2113A 

  Are you sure? yes | no

davedarko wrote 09/07/2018 at 22:45 point

me too, it sounds a bit pricey if you compare it to a diode solution. But then again you can't really compare that to a diode solution :D

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de∫hipu wrote 09/07/2018 at 22:59 point

Well, I just use the power switch to switch between battery and usb -- no diode :)

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davedarko wrote 09/07/2018 at 23:16 point

@ꝺeshipu wouldn't you reset / restart your gadget that way?

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de∫hipu wrote 09/07/2018 at 23:39 point

Sure, but I don't mind. I guess I could add a large capacitor if I wanted to prevent that.

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