The LM2574N-3.3 is a versatile and efficient step-down voltage regulator from Texas Instruments, designed to provide a fixed output voltage of 3.3V from a higher input voltage source. This regulator is part of the LM2574 series, which is known for its simplicity and ease of use in a wide range of applications.

Key Features

• Output Voltage: Provides a stable 3.3V output with a precision of ±4% over line and load conditions.
• Input Voltage Range: Capable of handling input voltages from 8V to 40V, making it suitable for various supply sources.
• Output Current: Delivers up to 0.5A of load current with excellent line and load regulation.
• Efficiency: Integrated switch with low on-state resistance ensures high efficiency, which is critical for battery-powered devices.
• Simple Design: Requires minimal external components for operation, which simplifies design and reduces overall system cost.
• Thermal Shutdown: Features built-in thermal shutdown protection to prevent damage from overheating.
• Current Limiting: Inherent current limiting provides protection against output overload and short-circuit conditions.

Applications

The LM2574N-3.3 is an ideal choice for a broad range of applications, including:

• Consumer Electronics
• Telecommunications Equipment
• Peripheral Ports
• Portable Devices
• Power Supplies

Package and Quality

Encased in a robust 8-pin PDIP (Plastic Dual-In-line Package), the LM2574N-3.3 is designed for through-hole mounting, which is preferred for prototyping and applications that require strong mechanical bonds between the PCB and the regulator. Texas Instruments is renowned for its commitment to quality, ensuring that each LM2574N-3.3 meets high standards of performance and reliability.

Conclusion

With its ease of use, reliability, and efficiency, the LM2574N-3.3 from Texas Instruments stands out as a superior choice for designers looking for a simple and effective way to manage power in their electronic projects. Its ability to handle a wide input voltage range, coupled with its robust protection features, makes it a versatile component suitable for a diverse array of applications.