NCP552SQ50T1

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PMIC (Power Management IC) Voltage Regulators Linear are voltage regulating devices used to maintain the output voltage of the system or device at a certain value. The NCP552SQ50T1 is a low dropout linear regulator capable of supplying up to 800 mA of load current at a voltage output of 5 V. This device is designed as a drop-in replacement for the existing NCP552D30T1 and can be used in a wide variety of applications such as automotive, industrial, and consumer.

Application Field of NCP552SQ50T1

The NCP552SQ50T1 is a highly-integrated linear regulator, which can be used in automotive, industrial, and consumer designs. This device has a low dropout voltage of 0.6 V and has very low quiescent current, making it ideal for portable devices. It can also be used in applications that require very good noise rejection, such as automotive electronics, diagnostics, medical systems, consumer electronics and networking equipment.

Its high-integration simplifies the layout and eliminates the need for external components such as inductors, capacitors or heatsinks. Its wide input voltage range (2.5V to 5.5V) makes it suitable for a variety of input sources, such as batteries and any other sources with a similar voltage range.

Features & Benefits

The NCP552SQ50T1 comes with a number of features and benefits that make it an ideal choice for many applications. It is designed to have low noise characteristics and high accuracy, which make it suitable for audio applications, for instance. The internal current limiter and thermal protection ensure reliability and safety in the event of a fault.

Another feature is its wide operating temperature range (-40°C to +125°C). This allows the device to be used in a wide range of environments, including automotive and industrial. The NCP552SQ50T1 also has a fast transient response which helps to minimize output voltage deviations when the input voltage or load currents change.

Working Principle

The NCP552SQ50T1 is a low dropout linear regulator, which means it is able to maintain the output voltage at a steady value. It works by using an internal PNP pass transistor to connect the output voltage to a reference voltage (Vref). In this way, the output voltage is kept at the same potential as Vref. At the same time, an internal N-channel MOSFET is used to regulate the load current, in order to ensure that the output voltage does not exceed the desired value.

When the load current increases, the internal N-channel MOSFET is activated, reducing the amount of current that can flow through the pass transistor, thus preventing the output voltage from increasing. Similarly, when the load current decreases, the internal N-channel MOSFET is deactivated, allowing more current to flow through the pass transistor, thus preventing the output voltage from decreasing.

The NCP552SQ50T1 also features a built-in current limiter, which helps protect the device against overloads. This limiter is active when the output voltage exceeds 7.0 V and is used to protect the device from current spikes that may occur. Additionally, the NCP552SQ50T1 also includes a thermal protection feature, which helps protect the device from damage caused by excessive temperature.

Conclusion

The NCP552SQ50T1 is a reliable and highly integrated low dropout linear regulator, which offers high accuracy, low noise and a wide operating temperature range. It can be used in a variety of applications, from automotive to industrial and consumer electronics, and its internal current limiter and thermal protection ensure maximum reliability and safety.

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