Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Controller, Intel IMVP8
Voltage - Input:	4.5 V ~ 20 V
Number of Outputs:	1
Voltage - Output:	--
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	52-VFQFN Exposed Pad
Supplier Device Package:	52-QFN (6x6)

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NCP81243MNTXG Application Field and Working Principle

Introduction

The NCP81243MNTXG is a special purpose voltage regulator integrated circuit (IC) from ON Semiconductor. It is part of the Power Management and Supply (PMIC) product family, and falls in the category of voltage regulators, specifically special purpose voltage regulators. It is designed for portable device applications such as smartphone and tablet where a high-accuracy, low-noise, low-heat output is required. The NCP81243MNTXG offers a wide range of features, making it one of the most advanced voltage regulators in its product class.

Product Description

The NCP81243MNTXG is an ultra-low-noise, low-dropout (LDO) voltage regulator. It offers very accurate voltage regulation with low dropout, low output noise and very low temperature coefficient. This makes the IC ideal for use in portable devices such as smartphones and tablets that require very stable and low-noise power sources. The NCP81243MNTXG can provide an output voltage from 0.8 volts to 8.0 volts and is able to supply up to 0.8 A of current. It is also capable of supplying up to 15.6 A in pulse mode.The NCP81243MNTXG has many features that make it ideal for use in portable applications. It has an adjustable output voltage, enabling the device to be set to the exact voltage required for the application. It also has an adjustable output current limit, allowing the device to be not only accurate but also efficient since it only supplies the exact amount of current required. It also has a fast transient response and is tolerant to input voltage variations.The IC features an internal temperature monitor which is embedded in the chip and can detect when the device is running too hot. It then reduces the amount of current it supplies, thus keeping the device from overheating.

Applications

The NCP81243MNTXG is ideal for use in portable applications like smartphones, tablets and notebooks, where a high-accuracy, low-noise and low-heat output is required. It is also suitable for use in any application where a stable power supply is needed.The NCP81243MNTXG can also be used in automotive and industrial applications such as battery powered systems, LED lighting, motor control, and power conditioning systems.

Working Principle

The NCP81243MNTXG is an ultra-low-noise, low-dropout (LDO) voltage regulator. It works by controlling the output voltage to maintain it at a constant level.The IC features an error amplifier, a voltage reference, a current limit circuit and an internal temperature monitor. The error amplifier compares the output voltage to the reference voltage and generates an error signal when the two are not equal. This error signal is then sent to the current limit circuit which adjusts the output voltage accordingly.The output voltage is also affected by the internal temperature monitor. If the temperature rises above certain levels, the IC will reduce the amount of current it supplies, thus preventing the device from overheating.

Conclusion

The NCP81243MNTXG is an ultra-low-noise, low-dropout (LDO) voltage regulator. It is suitable for use in portable applications such as smartphones, tablets and notebooks, where a high-accuracy, low-noise and low-heat output is required. It also offers many features such as adjustable output voltage, adjustable output current limit, fast transient response and internal temperature monitor. Its easy to use and reliable performance makes it a great choice for any application that requires a stable power supply.

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