12V input to 3 fixed voltage levels output, controlled by a pushbutton.

[LCM]

Hi

Would anyone be able to point me in the right direction (design examples, components to use) in order to make a controller that via a push button cycles through 4 fixed output levels (off, 33%, 66%, 100%). See attached drawing for wanted functionality details.

Br,
LC

 

[Harald Kapp]

Use a microcontroller (e.g. Arduino, PIC, ...) to control the sequence of voltage steps.
Use the microcontroller to set a programmable voltage regulator to the desired output voltage. Some examples for programmable voltage regulators:

• MAX17083
• LP87332D
  
• LP2951 + digital potentiometer

You surely will find many others.