20250412 TR-595E Top Panel v04D

20250412 TR-595E Top Panel v04D

Yes, it is version 04D now. Over some stupid reasons. When I soldered the board, I got about 1.92V from the meter. Disappointing was not the word I was looking for. More like…

You see, the TPS3733 voltage regulator has one configuration pin which I should not be meddling with when I needed a fixed output voltage. The Datasheet showed me where I went wrong and luckily, I was able to rectify this mistake. And so, yeah, version 04D superseeds v04C now…

The pin in question is pin#4 or FB as show in the circuit above. I am supposed to be using the uppermost circuit, which is for fixed-voltage.
A quick work with a blade and soldering iron soon removed that connection. It was so overdone, I actually broke the pin instead of bending it away from the solder pad…
20250412 TR-595E Top Panel v04D
Finally, I got 3.3volts out of a 3.7v LiPo battery!
Posted in A Piscean Works Blog, Computers, Design, EaglePCB7.77, Electronics, JLCPCB, Lighting, Printed Circuit Board, Sci-Fi, Star Trek, TR-595E, Tricorder, Upgrade Parts.

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