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NCP137AFCT105T2G Application Field and Working Principle

NCP137AFCT105T2G belongs to the PMIC - Voltage Regulators - Linear category. It is a 1A low-dropout (LDO) linear regulator, with a very low quiescent current and low dropout voltage of less than; 250mV. This voltage regulator is suitable for use in handheld devices that require high power efficiency and low power consumption.

Features

The NCP137AFCT105T2G voltage regulator features a wide operating temperature range, low dropout voltage, tight output voltage accuracy and low quiescent current. It also has excellent line and load regulation characteristics, as well as short-circuit protection, reverse- and over-voltage protection, current limiting, thermal shutdown and short-circuit protection.

Applications

NCP137AFCT105T2G is primarily used in consumer electronic devices, such as portable media players, digital cameras and portable medical devices. It is also ideal for use in data communication and networking equipment, as well as a range of other consumer and industrial products.

Working Principle

NCP137AFCT105T2G is a linear voltage regulator that works on the principle of controlling the voltage across a resistor in order to maintain a constant output voltage. The current flowing into the voltage regulator is sent through the resistor, which then creates a voltage drop, or droop, across it. This droop is converted into a control signal, which, in turn, is used to adjust the output voltage so that it remains constant.

The voltage regulator also has an error amplifier that creates an error voltage, which is compared to the reference voltage and provided as an input to the regulating circuit. The regulating circuit then uses this error voltage to adjust the current flowing through the resistor, and thus, the output voltage.

Conclusion

The NCP137AFCT105T2G is a 1A low-dropout (LDO) linear voltage regulator that is suitable for use in handheld devices that require high power efficiency and low power consumption. It is a feature-rich voltage regulator, with a wide operating temperature range, low dropout voltage, tight output voltage accuracy, and low quiescent current. It also has excellent line and load regulation characteristics, as well as short-circuit protection, reverse- and over-voltage protection, current limiting, thermal shutdown, and short-circuit protection. Its primary application is in consumer electronic devices, such as portable media players, digital cameras and portable medical devices, but it is also ideal for use in data communication and networking equipment, as well as other consumer and industrial products.

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