NCP563SQ33T1G

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The NCP563SQ33T1G from ON Semiconductor is a PMIC – Voltage regulators – Linear device designed to provide voltage and current regulation functions. This part has a wide range of applications in the areas of personal electronics, automotive and consumer applications, industrial and medical markets, where maintaining a steady voltage and current output is critical. It is a low dropout voltage regulator that can be employed to deliver up to 1.5A of precision output while providing up to 90% of efficiency.

The NCP563SQ33T1G is fully protected with numerous circuit protection features. It has an adjustable output voltage range and is capable of working within an operating temperature range marked between -40°C and +125°C. This part includes several features such as accurate reference, line and load regulation, thermal shutdown, under-voltage lockout, thermal protection, output current limit, and soft start.

Features

• Accurate Reference, Line and Load Regulation
• Inherently Safe Under Overload Conditions
• Adjustable Output Voltage Range
• Operating Temperature Range: -40°C to +125°C
• Low Input to Output Voltage Dropout
• High Efficiency
• Integrated Thermal Shutdown circuitry
• Under-Voltage Lockout Circuit
• Thermal Protection During Shorts and Overload Conditions
• Reverse Voltage Protection
• Output Current Limit with Auto Restart
• Soft Start

Working Principle

The NCP563SQ33T1G consists of a main power input stage followed by the output stage. The series voltage regulator is designed with a voltage reference circuit which controls the main power input stage. The voltage reference comprises a voltage divider network and a comparator. The comparator acts as a control switch and monitors the voltage divider feedback loop to determine the output voltage to be maintained. During normal operation, the comparator output is constantly monitoring the voltage divider output and feeds back information to the main power input stage.

The main power input stage is then used to provide the output voltage of the NCP563SQ33T1G. During an input voltage change, the voltage reference circuit detects the change in the input voltage and sends an adjustment signal to the main power input stage. This adjustment signal adjusts the output voltage according to the predetermined feedback reference.

The NCP563SQ33T1G also includes several protection circuits for shielding it from potential circuit damages. An overtemperature protection is included to shut down the output when the temperature exceeds the specified limit, protecting it from possible overheating. Similarly, an undervoltage protection is provided, which shuts down the output when the input voltage is below a predetermined level. In case of short circuit and overload conditions, the output stage is programmed to reduce its output current levels, protecting the NCP563SQ33T1G from permanent damages.

Applications

The NCP563SQ33T1G is an effective voltage and current regulator solution, making it suitable for a wide range of applications. It is used in portable consumer electronics, automotive, industrial and medical markets, where precise regulation of output voltage and current is critical. It is also utilized in medical equipment, as it provides a high degree of protection from possible damage from overheating, undervoltage, and overload conditions.

The NCP563SQ33T1G is also found in industrial settings where output accuracy and stability are of paramount importance. It can be used for controlling the power and reliability of equipment in the robotic, lighting, and communication industries, as well as in military and aerospace applications, and embedded systems.

In addition, the NCP563SQ33T1G can be useful in the telecommunications industry, as it provides a highly efficient and stable output, while still being economical. It is also used in power systems such as GPS, FiWi, and LoRa applications.

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