This project shows a DC-DC buck boost circuit which can produce an output of 3.3V for an input of 2.7V to 4.2V , for example from a Li-on battery. The Circuit uses LTC3440 Buck boost IC which is a fixed frequency boost converter. To get high efficient results, inductor with high frequency core material should be used.
- Input(V): 2.7V DC to 4.2V DC
- Output(V): 3.3V DC
- Output load: 600mA
2.7V-4.2V input to 3.3V output Buck-Boost Converter – [Link]