National Semiconductor Tariff Inquiry

LP2957AIT

LP2957AIT Description

The LP2957AIT is a linear regulator IC designed for power management applications. Manufactured by National Semiconductor, this regulator offers a fixed output voltage of 5V and can deliver up to 250mA of output current. It is housed in a TO220-5 package, making it suitable for through-hole mounting. This regulator is equipped with several protection features, including over-current, over-temperature, and reverse polarity protection, ensuring reliable operation in various conditions. Despite its obsolescence, the LP2957AIT remains a robust choice for applications requiring a stable power supply.

LP2957AIT Features

• Output Voltage: Fixed at 5V, ensuring a stable power supply for various electronic devices.
• Output Current: Capable of delivering up to 250mA, making it suitable for applications requiring moderate power.
• Input Voltage Range: Supports a maximum input voltage of 30V, providing flexibility in power source selection.
• Low Dropout Voltage: A maximum dropout voltage of 0.8V at 250mA ensures efficient operation even at low input voltages.
• Protection Features: Over-current, over-temperature, and reverse polarity protections enhance reliability and protect against common power-related issues.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, optimizing power consumption.
• Quiescent Current: A low quiescent current of 200 µA minimizes power consumption during idle periods.
• Mounting Type: Through-hole mounting ensures secure and reliable installation in various circuit boards.
• Packaging: Supplied in a tube package, facilitating easy handling and storage.

LP2957AIT Applications

The LP2957AIT is ideal for a range of applications where a stable 5V power supply is required. Its moderate output current and robust protection features make it suitable for:

• Consumer Electronics: Providing stable power to devices such as portable radios, MP3 players, and small appliances.
• Industrial Equipment: Ensuring reliable operation in control systems, sensors, and other industrial applications.
• Telecommunications: Powering low-power communication modules and devices.
• Automotive: Suitable for in-car electronics and accessories requiring a stable power supply.
• Medical Devices: Providing reliable power to low-power medical instruments and monitoring devices.

Conclusion of LP2957AIT

The LP2957AIT is a versatile linear regulator IC that offers a stable 5V output with up to 250mA of current. Its low dropout voltage and comprehensive protection features make it a reliable choice for a variety of applications. Despite being obsolete, the LP2957AIT remains a valuable component for applications where a stable power supply is crucial. Its through-hole mounting and tube packaging ensure ease of use and storage, making it a practical solution for power management needs.