LM2587SX-ADJ/NOPB

The LM2587SX-ADJ/NOPB is a high-performance step-down (buck) voltage regulator manufactured by Texas Instruments. It is designed to provide a regulated output voltage from a higher input voltage, making it suitable for a variety of applications, including power management in portable devices, battery-powered systems, and other electronic circuits requiring efficient voltage regulation.

Key Features:

1. Adjustable Output Voltage: The LM2587SX-ADJ/NOPB allows for an adjustable output voltage, which can be set using external resistors. This flexibility makes it suitable for applications requiring specific voltage levels.

2. High Efficiency: The device is designed to operate with high efficiency, often exceeding 90%, which helps in reducing heat generation and improving battery life in portable applications.

3. Wide Input Voltage Range: It supports a broad input voltage range, typically from 4.5V to 40V, allowing it to be used in various power supply scenarios.

4. Output Current Capability: The LM2587 can deliver up to 3A of output current, making it suitable for powering devices with moderate to high current requirements.

5. Integrated Features: The regulator includes built-in features such as overcurrent protection, thermal shutdown, and soft-start functionality, enhancing reliability and ease of use in circuit designs.

6. Package Type: The LM2587SX-ADJ/NOPB is available in a surface-mount package (SOT-23), which is compact and suitable for modern PCB designs where space is a premium.

7. Operating Temperature Range: It operates effectively over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

8. Switching Frequency: The device operates at a fixed switching frequency, which helps in minimizing the size of external components such as inductors and capacitors.

Applications:

• Power Supply for Microcontrollers and DSPs: The adjustable output voltage feature makes it ideal for powering microcontrollers and digital signal processors that require specific voltage levels.
• Battery-Powered Devices: Its high efficiency and low quiescent current make it suitable for battery-operated devices, extending battery life.
• Telecommunications Equipment: The LM2587 can be used in telecom applications where reliable power supply is critical.
• Consumer Electronics: It is also applicable in various consumer electronics, providing stable power to different components.

Conclusion:

The LM2587SX-ADJ/NOPB from Texas Instruments is a versatile and efficient voltage regulator that meets the demands of modern electronic applications. Its adjustable output, high efficiency, and integrated protection features make it a popular choice among engineers and designers looking for reliable power management solutions.