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PMIC - Voltage Regulators - Linear

On semiconductor\'s NCP718ASN150T1G is a low dropout linear adjustable regulator. It is a one-of-a-kind 3-terminal regulator with a voltage drop of 0.3V at 150mA. NCP718ASN150T1G is widely used in various electronic circuits for its many benefits like low power consumption and high ripple rejection.

Application Fields

NCP718ASN150T1G is most suitable for applications requiring a small voltage variation like PC, PCadd-in cards, portable electronic equipment, and printers, with the advantage of low power consumption and high ripple rejection. It has wide applications that include providing an adjustable regulated voltage powering general purpose logic, a voltage reference for transducers, digital devices, analog devices, sensors, adjustable timers and many more.

Working Principle

The working principle of NCP718ASN150T1G is based on a low–dropout three-terminal voltage regulator. It contains an adjustable output range, which is adjustable both with the use of external resistors and the internal reference voltage of 2.5V. The internal reference voltage allows the adjustability of the external resistors and changes the output voltage accordingly.

The output voltage is determined by an internal compensation circuit. This compensation circuit senses the output voltage and compares it to the voltage supplied by the internal reference. The error is amplified and fed back to the voltage regulating circuit. The regulating circuit then adjusts the output voltage in order to match the set point.

The working principle of NCP718ASN150T1G consists of two main stages. The first stage is the low–dropout voltage regulator with output voltage of 1.25V – 19V. The second stage is the output amplifier, which amplifies the output voltage up to a maximum of 150 mA.

Conclusion

On semiconductor’s NCP718ASN150T1G is a low dropout linear adjustable voltage regulator that has wide applications in providing an adjustable regulated voltage powering digital devices, analog devices, sensors, and many more. Its working principle is based on an internal reference voltage of 2.5V and an adjustable output range. This reduces the need for external adjustment of the resistor. Additionally, its low power consumption, high ripple rejection and small voltage variation makes NCP718ASN150T1G suitable for various electronic circuits.

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