The LM2674N-3.3 from Texas Instruments is a highly efficient, space-efficient switched mode power supply (SMPS) step-down (buck) voltage regulator. This regulator is part of the LM2674 series, which is known for its ease of use and robust performance. The device is capable of driving a 500mA load with excellent line and load regulation.

Key Features

• Output Voltage: The LM2674N-3.3 provides a fixed output voltage of 3.3V, which is a common requirement for digital circuits, including microcontrollers and logic devices.
• High Efficiency: With an efficiency of up to 92%, this voltage regulator minimizes the power loss as heat, making it an ideal choice for energy-sensitive applications.
• Adjustable Switching Frequency: The integrated oscillator allows the switching frequency to be set anywhere from 260kHz to 400kHz, enabling flexibility in balancing efficiency and component size.
• Simple External Components: The LM2674N-3.3 requires minimal external components for operation, which reduces the overall design complexity and saves on board space.
• Thermal Shutdown and Current Limit Protection: The device includes built-in thermal shutdown and current limit features to protect against over-temperature and over-current conditions.

Applications

The LM2674N-3.3 is suitable for a wide range of applications, including:

• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter (Buck-Boost)

Package and Quality

Housed in an 8-pin PDIP (Plastic Dual-In-line Package), the LM2674N-3.3 is designed for through-hole mounting, making it easy to integrate into a variety of circuit boards. Texas Instruments ensures high manufacturing standards, offering reliability and performance that engineers can trust.

Conclusion

Overall, the LM2674N-3.3 is a versatile and reliable solution for power management in electronics. Its combination of high efficiency, adjustable switching frequency, and protection features makes it an excellent choice for designers looking to optimize power consumption and performance in their circuits.