Hello.
I'm working on a project to control a 24v solenoid with arduino. I just want to use one power supply for the project, so i'm looking for a fixed regulator that outputs 3v3. Since i'm going to make my own PCB, i would prefer a single chip only. I have searched everywhere, but i can obly find chips with a maximum input of 12-15 volts.
Any ideas on what i can use?
Look for buck converter. You can buy modules or roll your own.
Thanks. I will have a look
There are plenty of linear regulators that will accept >24V input. But with such a voltage drop it would probably be a good idea to use two separate regulators, the first dropping the voltage to ~12V and the second to 3.3V.
Pololu sells inexpensive and small switching regulators that would be much cooler / more efficient.
The reason the switchmode supply is suggested is that they are a lot more efficient and run cooler. Linear regulators work by dissipating the extra voltage as heat.
Weedpharma
LM317 has short circuit and over temp protection for a dollar. It is a linear regulator.