IFX1763LDVXUMA1 Integrated Circuits (ICs)

IFX1763LDVXUMA1 Application Field and Working Principle

IFX1763LDVXUMA1 is a device belonging to the category of PMIC (Power Management Integrated Circuit) and more specifically, the device is a linear voltage regulator. The voltage regulator has a wide array of applications, such as but not limited to, automotive, building control and power supplies.

The regulator, IFX1763LDVXUMA1, is a positive voltage regulator supplied in a PMSO6-E4 package and it provides a reliable and stable output voltage of 3.3V. The device has a wide input voltage range from 4.75-28V and its output voltage has a load regulation of 0.1%, while it has an operating temperature range of -40°C to +125°C.

The IFX1763LDVXUMA1 has a low quiescent current that is typically only 5µA, allowing the device to be used in low power applications. The device also has an integrated soft start feature that prevents current surge, which in turn prolongs the life of the power source and prevents voltage drop out at the components connected to the output.

Working Principle

A voltage regulator has 3 main components- a voltage reference, an error amplifier, and a power transistor. This basic linear circuit is often used to maintain the output voltage at a certain level to avoid over-voltage or under-voltage.

The voltage reference, which is the upper voltage seen by the transistor, is referred to as the desired output voltage of the regulator. This reference voltage is often set by an external resistor divider and it is usually an unchangeable value.

The error amplifier is used to compare the desired output voltage to the actual output voltage of the regulator. If the actual output voltage is lower than the desired output voltage, then the amplifier will send a signal to increase the voltage in the output transistor of the voltage regulator. On the other hand, if the actual output voltage is higher than the desired output voltage, then the amplifier will send a signal to decrease the voltage in the output transistor of the voltage regulator.

The power transistor is connected to the output and controlled by the error amplifier. Its duty is to adjust the output voltage according to the request generated by the amplifier. This adjustment is done by changing in the transistor’s resistance.

When it comes to the IFX1763LDVXUMA1 linear voltage regulator, integrated features such as the soft start and low quiescent current also play an important role in the way the voltage regulator works. By integrating such features, the regulator is able to provide better performance while keeping the current consumption low and preventing output voltage drops even when the operating temperature is high.