onsemi

NCP1117ST18T3

NCP1117ST18T3 Description

The NCP1117ST18T3 is a fixed-output linear regulator from onsemi, designed to provide a stable 1.8V output voltage with a maximum output current of 1A. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is housed in a Surface Mount SOT223 package, making it suitable for compact and efficient power supply designs. Despite being marked as obsolete, the NCP1117ST18T3 remains a reliable choice for applications requiring a robust and efficient power solution.

NCP1117ST18T3 Features

• Output Type: Fixed, ensuring a consistent 1.8V output voltage.
• Input Voltage Range: Capable of handling input voltages up to 20V, providing flexibility in power source selection.
• Output Current: Delivers a maximum output current of 1A, suitable for a wide range of applications.
• Number of Regulators: Single regulator, simplifying design and reducing component count.
• Output Configuration: Positive, ensuring compatibility with most electronic systems.
• Voltage Dropout: A maximum dropout voltage of 1.2V at 800mA, enhancing efficiency at lower input voltages.
• Operating Temperature: Wide temperature range from 0°C to 125°C, ensuring reliability in various environmental conditions.
• Quiescent Current: Low quiescent current of 10mA, minimizing power consumption during idle states.
• PSRR: High Power Supply Rejection Ratio of 70dB at 120Hz, ensuring minimal noise and ripple in the output voltage.
• Protection Features: Over-current and over-temperature protection, safeguarding the regulator and connected components from damage.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for various manufacturing processes without moisture-related concerns.
• Package: Tape & Reel (TR), facilitating automated assembly and handling.

NCP1117ST18T3 Applications

The NCP1117ST18T3 is ideal for a variety of applications where a reliable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering microcontrollers, sensors, and other low-power devices in consumer electronics.
• Industrial Equipment: Suitable for industrial applications requiring stable power supply in harsh environments.
• Telecommunications: Provides a stable power source for communication modules and devices.
• Automotive: Can be used in automotive applications where a compact and efficient power solution is needed.
• Medical Devices: Ensures reliable power supply for medical equipment operating within a wide temperature range.

Conclusion of NCP1117ST18T3

The NCP1117ST18T3 is a robust and efficient linear regulator that offers several advantages over similar models. Its fixed 1.8V output, combined with a maximum input voltage of 20V and a 1A output current, makes it versatile and suitable for a wide range of applications. The low dropout voltage of 1.2V at 800mA enhances efficiency, while the high PSRR of 70dB at 120Hz ensures minimal noise and ripple in the output voltage. The regulator also features over-current and over-temperature protection, safeguarding connected components from damage. Despite being marked as obsolete, the NCP1117ST18T3 remains a reliable choice for designers seeking a compact and efficient power solution.