The adjustable linear voltage regulator is one of the most widely used ICs. It provides a simple way to generate a regulated voltage at practically any level, with a minimum of complexity and external components. The regulator’s output voltage is set by the resistor divider R1 and R2. Intuitively, that the voltage produced by the divider should be 1.25 volts when the output is at the desired voltage.
\[V_{out}=1.25(1+\frac{R2}{R1})\]svg schematics by matt-chv is licensed under CC BY-SA 4.0
