LM2678T-5.0/NOPB

The LM2678T-5.0/NOPB is a high-efficiency step-down (buck) voltage regulator manufactured by Texas Instruments. It is designed to provide a regulated output voltage of 5.0V from a higher input voltage, making it suitable for a variety of applications, including power management in portable devices, automotive systems, and industrial equipment.

Key Features:

1. Output Voltage: The LM2678T-5.0/NOPB provides a fixed output voltage of 5.0V, which is ideal for powering microcontrollers, sensors, and other electronic components that require a stable voltage supply.

2. Input Voltage Range: The device can accept a wide input voltage range, typically from 8V to 40V, allowing it to be used in various applications where the input voltage may vary significantly.

3. High Efficiency: The LM2678T is designed for high efficiency, often exceeding 90%, which helps to minimize heat generation and prolong battery life in portable applications.

4. Output Current: It can deliver up to 1A of output current, making it suitable for powering devices with moderate current requirements.

5. Switching Frequency: The regulator operates at a fixed switching frequency of 260 kHz, which helps to reduce the size of external components such as inductors and capacitors.

6. Thermal Protection: The LM2678T includes thermal shutdown protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.

7. Package Type: The device is available in a TO-220 package, which provides good thermal performance and ease of mounting on PCBs.

8. Integrated Features: The LM2678T includes features such as soft-start capability, which helps to limit inrush current during startup, and a built-in compensation network that simplifies the design process.

9. Applications: Common applications for the LM2678T-5.0/NOPB include battery-powered devices, automotive electronics, point-of-load regulation, and other systems requiring efficient voltage regulation.

Electrical Characteristics:

• Input Voltage Range: 8V to 40V
• Output Voltage: 5.0V (fixed)
• Maximum Output Current: 1A
• Switching Frequency: 260 kHz
• Efficiency: Up to 90% or higher, depending on load conditions

Conclusion:

The LM2678T-5.0/NOPB is a versatile and efficient voltage regulator that is well-suited for a wide range of applications requiring reliable power management. Its combination of high efficiency, wide input voltage range, and integrated protection features makes it a popular choice among engineers and designers looking to implement robust power solutions in their electronic systems.