Switched mode power supply, Programmable switching regulator, on and off switch - tatanh1983/conchodom GitHub Wiki
The ISL81801 operates over wide input- and output-voltage ranges: 4.5V to 80V at the input, producing an output between 0.8V and 80V. To perform buck-boost conversion, the ISL81801 uses a proprietary control algorithm: it implements valley current modulation in boost mode, and peak current modulation for buck mode control, and switches smoothly from one mode to the other.