Voltage regulator ic 622k operating voltage: input voltage 18V output voltage 1.5-5.0V Regulator IC is the electronic components in the equipment that makes the output voltage stable. All voltage regulators use the same technique to stabilize the output voltage by sampling (Sampled) the Divider connected to the Inverting Input of the Error Amplifier, The Non-inverting Input of the error amplifier is connected to a reference voltage Vref. The Reference voltage is generated by a Bandgap Reference inside the IC. An error amplifier always tries to force its two ends of the input to be equal. For this purpose, it provides load current to ensure stable output voltage. IC, that is, integrated circuit is the use of semiconductor production process, in a small monocrystalline silicon chip to produce many transistors and resistors, capacitors and other components, and in accordance with the multi-layer wiring or tunnel wiring method to combine the components into a complete electronic circuit. It is represented in the circuit by the letter \"IC\" (also useful word symbol \"N\