@rozpruwacz said in 3.3v Boost Converter with Pass-Through: Hi, I just came across this project and I like the idea of pass trough very much I have a question, why did You use the LTC3525D part instead of MCP1640C which You already used in other boost converter projects ? MCP1640C is 5 times cheaper than LTC3525D and they are quite similar. I just now revised the board to expose the Enable pin, so now you can do a pass-through if you wish. I also made it more compact and gave it a ground-plane on the back. https://www.openhardware.io/view/279 Enjoy!

@alexsh1 If the pinout is the same, then the PCB should work.

Thanks you a lot for your work

@Jason-Brunk small value resistors can do the trick but you better try two silicon diodes 1N4001 or similar in series with the power line. Each diode give you around.0.7 volt drop.