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LP2982IM5-2.8

LP2982IM5-2.8 Description

The LP2982IM5-2.8 is a fixed output linear low dropout (LDO) regulator designed by National Semiconductor. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is optimized for applications requiring a stable 2.8V output voltage. With a maximum input voltage of 16V and an output current capability of 50mA, the LP2982IM5-2.8 is well-suited for a variety of low-power applications. The regulator features a dropout voltage of 0.325V at 80mA, ensuring efficient operation even at low input-to-output voltage differentials. The device is available in a surface-mount package, making it suitable for compact designs.

LP2982IM5-2.8 Features

• Fixed Output Voltage: The LP2982IM5-2.8 provides a stable output voltage of 2.8V, making it ideal for applications requiring a precise and consistent power supply.
• Low Dropout Voltage: With a maximum dropout voltage of 0.325V at 80mA, the regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Low Quiescent Current: The regulator operates with a quiescent current of only 95 µA, minimizing power consumption in standby mode.
• High PSRR: The device offers a power supply rejection ratio (PSRR) of 45dB at 1kHz, ensuring minimal noise and ripple on the output voltage.
• Protection Features: The LP2982IM5-2.8 includes over-current, over-temperature, and short-circuit protection, enhancing the reliability and robustness of the power supply.
• Enable Control: The regulator features an enable control pin, allowing for dynamic control of the output voltage, which is beneficial for power management in complex systems.
• Surface-Mount Package: The surface-mount package ensures ease of integration into modern, compact electronic designs.

LP2982IM5-2.8 Applications

The LP2982IM5-2.8 is ideal for a range of applications where a stable and efficient power supply is critical. Some specific use cases include:

• Battery-Powered Devices: The low dropout voltage and low quiescent current make this regulator suitable for battery-powered applications, where extending battery life is essential.
• Low-Power Systems: The regulator's efficiency and low power consumption make it ideal for low-power systems, such as embedded systems, IoT devices, and portable electronics.
• Sensitive Analog Circuits: The high PSRR ensures minimal noise on the output voltage, making it suitable for sensitive analog circuits that require a clean power supply.
• Industrial Control Systems: The robust protection features and stable output voltage make the LP2982IM5-2.8 a reliable choice for industrial control systems and instrumentation.

Conclusion of LP2982IM5-2.8

The LP2982IM5-2.8 is a versatile and efficient linear LDO regulator designed for applications requiring a stable 2.8V output voltage. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for low-power and battery-powered applications. The inclusion of over-current, over-temperature, and short-circuit protection ensures reliability and robustness, while the enable control feature provides dynamic power management capabilities. Although the product is marked as obsolete, its unique features and performance benefits continue to make it a valuable component for specific applications in the electronics industry.