NCV8163ASN120T1G

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NCV8163ASN120T1G Application Frield and Working Principle

Voltage regulators set and hold voltage output at a fixed reference level, regardless of input line and load current variations. The NCV8163ASN120T1G is a fixed output linear regulator, designed for a wide range of power management and battery-powered applications. It offers positive and negative voltage output, adjustable and fixed versions, and low-dropout linear and switch-mode topologies.

Application Field of NCV8163ASN120T1G

The NCV8163ASN120T1G is a linear regulator capable of providing up to 1.2A of load current over an input voltage range of 2.3V to 16V. The output voltage can be programmed using a single resistor to select any voltage within the valid range of 1.2V to 13.2V. This product is suitable for digital core and I/O power, low-noise analog, low quiescent current, and extended temperature operation applications.

It can be used in automotive, consumer and industrial applications. Automotive applications include ECUs, ADAS and infotainment. Industrial applications include industrial control systems, motor control, and renewable energy systems. Consumer applications include mobile phone baseband, Wi-Fi, IoT, and power strips.

Working Principle of NCV8163ASN120T1G

NCV8163ASN120T1G is a low-dropout linear voltage regulator. Linear voltage regulators employ a series pass device–a field effect transistor (FET)–to regulate the output voltage. Measurement of the output voltage is achieved using a resistive voltage divider. The input to the control-circuit voltage comparator is the combination of the output voltage and the reference voltage.

When the reference voltage is higher than the output voltage, the FET is switched on, thereby allowing more current to flow from the input to the output. The amount of current that can be sunk is limited by the maximum current or power dissipation of the FET. When the reference voltage is smaller than the output voltage, the FET is cut off, preventing the output voltage from exceeding the reference voltage.

The main concern with most linear regulators is maintaining a low dropout voltage, which refers to the difference between the input and output voltages. A low dropout voltagethe less power dissipated as heat, but when its too low, there may be insufficient power to maintain the reference voltage and control the FETs on/off state. This is why some linear regulators require the input voltage to remain at least a certain voltage above the output voltage. The NCV8163ASN120T1G has an extremely low dropout voltage, so it maintains its regulation even with very small dropout voltages.

The NCV8163ASN120T1G also has an advanced protection feature that monitors the output voltage for short-circuit, open-circuit, over-temperature and over-voltage conditions. It shuts down the output in the event of any of these conditions and prevents further damage to the device and the circuit. It also has an enable pin that can be used to control the chip\'s output.

Conclusion

The NCV8163ASN120T1G is a low-dropout linear voltage regulator that is capable of providing a wide range of input and output voltages. It is suitable for many automotive, consumer and industrial applications, such as ECUs, low-noise analogs, IoT and power strips. It has an advanced protection feature that monitors the output voltage and shuts down the output in the event of any over-voltage or over-temperature conditions.

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