Building a Power Supply for My Project

[LoveChip]

I need to build a power supply with adjustable output voltage for my DIY electronics project that can power a variety of electronic devices including Arduino-based projects, small motors, sensors, etc.

For the core electronics of this power supply, I have two choices, one is the RT8223MGQW synchronous step-down converter, and the other is the MP2307DN-LF-Z. Does anyone know which one fits better?

MP2307DN-LF-Z specs

RT8223MGQW specs

 

[betwixt]

MP2307 is obsolete, you might have trouble finding them.
A thought - if you are at DIY level with Arduino projects, do you have the equipment and experience to handle these tiny SMD devices? No offense meant if you are.

Brian.

 

[KlausST]

For the core electronics of this power supply, I have two choices, one is the RT8223MGQW synchronous step-down converter, and the other is the MP2307DN-LF-Z. Does anyone know which one fits better?

I have a brown shoe and a green shoe ... which one fits my daughter better?
What I want to say: How could we know? .. since you don´t give any value we could do a "fit" check on.

Arduino, motor, sensor ... neither gives informations about voltage and current.

Also we don´t know what your input power source is.

Klaus

 

[cupoftea]

So you want to build it yourself as a project...or you just want a variable power supply and you are happy to just buy it in?
There are loads of Lab or Bench power supplies for sale offTheShelf which do what you want?

 

[codemaster11]

i think instead of building a complete circuit for diy adjustable dc power supply. use 19v adapter with LM317 with series pass transistor. arduino and sensors need very low current in mA and Vindc of 5vdc or 3.3vdc .but for motor like small servo motor include series pass transistor.