NCV4274CDT33RKG

NCV4274CDT33RKG Application Field and Working Principle

NCV4274CDT33RKG is a Linear Voltage Regulator (LVR) from the PMIC - Voltage Regulators category from ON Semiconductor. It offers immense stability, a wide input voltage range of 5.3V to 40V, and a maximum output current of 1.2A. It is also used frequently in power supply systems to create a stable low voltage output from an input voltage source. This article will discuss the application field and working principle of the NCV4274CDT33RKG.

NCV4274CDT33RKG Application Field

The NCV4274CDT33RKG has a wide range of applications in many types of electrical systems. It can be used in automotive systems, such as LED driver systems, to provide the LED’s with a steady, low voltage output. It can also be used in a power supply system to provide a stable output voltage. NCV4274CDT33RKG’s can be combined with other LVR’s to form adjustable regulator solutions, or can be used to provide a stable output voltage from an input voltage source. Its wide operating temperature range (-40°C to 125°C) makes it ideal for applications where a high temperature is expected. Additionally, its high input voltage operation makes it ideal for applications where a higher input voltage is expected.

NCV4274CDT33RKG Working Principle

The NCV4274CDT33RKG uses a Linear Voltage Regulation (LVR) principle, meaning that it is a voltage limiting circuit. This voltage limiting circuit limits the output voltage that can be achieved, and consequently limits the amount of current that can be drawn from the system. The linear regulation principle ensures that the output voltage generated is stable, and that fluctuations in the output voltage are minimized, giving the designer confidence that the system will remain operating correctly, regardless of the input voltage present.

The NCV4274CDT33RKG utilizes two transistors, Q1 and Q2. Q1 is the primary power transistor, and is responsible for the voltage regulation. It is a field effect transistor (FET) with the gate connected to the output voltage. The base voltage of Q1 is regulated by a voltage divider, which is connected to the output voltage. This voltage divider is composed of R1, R2 and R3, and it produces a voltage, which is compared to the output voltage. When the output voltage is higher than the reference voltage, the gate voltage applied to Q1 decreases, and this turns off the transistor. This causes the output voltage to drop and result in a stable output voltage. When the output voltage is lower than the reference voltage, the gate voltage applied to Q1 increases, and this turns on the transistor. This causes the output voltage to rise and result in a stable output voltage.

Q2 is an auxiliary power transistor, and is responsible for limiting the output current. Its base voltage is provided by R4, which is connected to the output voltage. When the output current increases, R4 drops and increases the base voltage of Q2, which in turn turns on the transistor. This causes the voltage between VOUT and GND to increase, thus limiting the output current. The current limiting feature of the NCV4274CDT33RKG also helps to protect other components on the circuit.

The NCV4274CDT33RKG also features an Enable Pin (EN). The Enable Pin allows the user to turn the device on and off. When the Enable Pin is in the low (or GND) state, the device is turned off, and when it is in the high (or VCC) state, the device is turned on. This feature is useful for applications where the circuit is powered on and off frequently.

Conclusion

The NCV4274CDT33RKG is a Linear Voltage Regulator from the PMIC - Voltage Regulators category from ON Semiconductor. It is used in many electrical systems for its wide input voltage range, high stability and maximum output current of 1.2A. It is designed to provide a stable, low voltage output from an input voltage source and has many features, such as a current limiting feature and an Enable Pin, to ensure that the system remains operational even when the input voltage fluctuates. It is an ideal choice for automotive systems and power supply systems.