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LP2980AIM5-3.1

LP2980AIM5-3.1 Description

The LP2980AIM5-3.1 is a fixed output linear low-dropout (LDO) voltage regulator designed by National Semiconductor. This device is specifically engineered to provide a stable 3.1V output voltage with a maximum input voltage of 16V. It is capable of delivering up to 50mA of output current, making it suitable for a variety of low-power applications. The regulator features a low quiescent current of 110 µA, which is crucial for maintaining high efficiency in battery-powered and energy-sensitive systems.

LP2980AIM5-3.1 Features

• Fixed Output Voltage: The LP2980AIM5-3.1 offers a fixed output voltage of 3.1V, ensuring consistent power supply to connected devices.
• Low Dropout Voltage: With a low dropout voltage, this regulator can maintain regulation even when the input voltage is close to the output voltage, enhancing its efficiency in low-headroom applications.
• Low Quiescent Current: The regulator consumes only 110 µA of quiescent current, which is beneficial for applications where power consumption needs to be minimized.
• High PSRR: The Power Supply Rejection Ratio (PSRR) of 63dB at 1kHz ensures that the regulator can effectively filter out noise from the input power supply, resulting in a cleaner output voltage.
• Protection Features: The LP2980AIM5-3.1 includes over-current, over-temperature, and short-circuit protection features, safeguarding the regulator and connected circuits from potential damage.
• Enable Control Feature: The enable control feature allows for easy control of the regulator's operation, enabling or disabling the output as needed.
• Surface Mount Packaging: The regulator is available in a surface mount package, making it suitable for automated assembly processes and compact designs.

LP2980AIM5-3.1 Applications

The LP2980AIM5-3.1 is ideal for a range of applications where a stable and efficient power supply is required. Some specific use cases include:

• Battery-Powered Devices: Due to its low quiescent current and low dropout voltage, the LP2980AIM5-3.1 is well-suited for battery-operated devices such as portable electronics, where extending battery life is critical.
• Low-Power Systems: The regulator's ability to deliver up to 50mA of current makes it suitable for low-power systems, including microcontrollers, sensors, and other small-scale electronics.
• Noise-Sensitive Applications: The high PSRR ensures that the regulator can effectively filter out noise, making it ideal for applications where a clean power supply is essential, such as in precision analog circuits.
• Automotive and Industrial: The regulator's robust protection features and surface mount packaging make it suitable for automotive and industrial applications where reliability and compactness are paramount.

Conclusion of LP2980AIM5-3.1

The LP2980AIM5-3.1 from National Semiconductor is a highly efficient and reliable fixed output LDO voltage regulator. Its low quiescent current, high PSRR, and comprehensive protection features make it an excellent choice for a variety of low-power and noise-sensitive applications. The enable control feature and surface mount packaging further enhance its versatility and ease of integration into modern electronic designs. Whether powering battery-operated devices or ensuring a stable supply in industrial systems, the LP2980AIM5-3.1 stands out as a robust and efficient solution.