The LM2576-Adjustable Buck regulator using LM2576- Adj series are monolithic IC that provides all active functions for a step-down(buck) switching regulator. The output voltage is adjustable from 1.23 v to 37 v and are capable of driving 3 am. Load with excellent line and load regulation
It requires minimum number of external components.
Below are 2 version of it.
Fig 1 – LM2576-Adjustable Buck regulator output of 5V
Fig 2 – LM2576-Adjustable Buck regulator output of 1.2v to 35 v
If you want to voltage regulator circuit using LM78XX IC click here.