onsemi

NCP1117ST20T3

NCP1117ST20T3 Description

The NCP1117ST20T3 is a linear voltage regulator designed by onsemi, featuring a fixed output voltage of 2V and a maximum output current of 1A. This regulator is housed in a SOT223 package, making it suitable for surface-mount applications. With maximum a input voltage of 20V, it offers a dropout voltage of 1.2V at 800mA, ensuring efficient operation even under varying load conditions. The NCP1117ST20T3 is designed to operate within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and consumer applications. It also features over-current and over-temperature protection, enhancing its reliability and safety.

NCP1117ST20T3 Features

• Fixed Output Voltage: The NCP1117ST20T3 provides a stable 2V output voltage, ensuring consistent power supply to connected devices.
• High Current Capability: With a maximum output current of 1A, it can support a variety of applications requiring moderate power levels.
• Low Dropout Voltage: A dropout voltage of 1.2V at 800mA ensures efficient operation, especially in applications where the input voltage may be close to the output voltage.
• Over-Current and Over-Temperature Protection: These protection features safeguard the regulator and connected devices from damage due to overloads and excessive temperatures.
• Wide Operating Temperature Range: Suitable for operation between 0°C and 125°C, the NCP1117ST20T3 can be used in various environmental conditions.
• Surface-Mount Packaging: The SOT223 package is ideal for compact and space-constrained designs, facilitating easy integration into modern electronic systems.
• High PSRR: A power supply rejection ratio (PSRR) of 70dB at 120Hz ensures minimal noise and ripple on the output voltage, enhancing the stability and performance of the regulated power supply.

NCP1117ST20T3 Applications

The NCP1117ST20T3 is well-suited for a variety of applications where a stable and reliable power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering low-voltage devices such as portable audio equipment, smartphones, and tablets.
• Industrial Equipment: Suitable for powering sensors, actuators, and other low-power components in industrial control systems.
• Automotive Electronics: Can be used in automotive applications where a compact and reliable power supply is needed.
• Medical Devices: Provides a stable power source for low-voltage medical equipment, ensuring reliable operation.
• Telecommunications: Useful in powering low-voltage components in communication devices and infrastructure.

Conclusion of NCP1117ST20T3

The NCP1117ST20T3 is a robust and versatile linear voltage regulator that offers a combination of high performance and reliability. Its low dropout voltage, high PSRR, and over-current and over-temperature protection make it an excellent choice for applications requiring stable and efficient power supply. Despite being marked as obsolete, the NCP1117ST20T3 remains a valuable component for engineers and designers looking for a reliable and compact power solution. Its wide operating temperature range and surface-mount packaging further enhance its suitability for a broad range of applications.