LM2574HVM-3.3

The LM2574HVM-3.3 is a high-performance, step-down (buck) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 1A. This device is particularly well-suited for applications requiring efficient power conversion from a higher input voltage to a lower output voltage.

Key Features:

1. Input Voltage Range: The LM2574HVM-3.3 can accept a wide input voltage range, typically from 4.75V to 40V, making it versatile for various power supply applications.

2. Output Voltage: The fixed output voltage of 3.3V is ideal for powering microcontrollers, sensors, and other digital devices that require a stable supply.

3. Efficiency: The regulator boasts high efficiency, often exceeding 80% under typical load conditions. This efficiency helps to minimize heat generation and prolongs the lifespan of the components in the circuit.

4. Switching Frequency: The device operates at a fixed switching frequency of 52 kHz, which helps to reduce the size of external components such as inductors and capacitors.

5. Thermal Protection: The LM2574HVM-3.3 includes built-in thermal shutdown protection, which prevents damage to the device in case of overheating.

6. Current Limit: It features current limiting to protect against overcurrent conditions, ensuring safe operation under varying load conditions.

7. Package Type: The regulator is available in a robust TO-220 package, which allows for easy heat dissipation and mounting on a PCB.

8. Application Areas: This voltage regulator is commonly used in battery-powered devices, automotive applications, and various consumer electronics where efficient power management is crucial.

Electrical Characteristics:

• Output Current: Up to 1A
• Output Voltage Tolerance: Typically ±4%
• Quiescent Current: Low quiescent current helps in battery-powered applications to extend battery life.
• Ripple Voltage: The output ripple voltage is minimized, ensuring a clean power supply for sensitive electronics.

Typical Applications:

• Power supplies for microcontrollers and digital circuits
• Automotive power management systems
• Battery chargers and management systems
• Industrial automation and control systems

Conclusion:

The LM2574HVM-3.3 from Texas Instruments is a reliable and efficient solution for step-down voltage regulation. Its combination of a wide input voltage range, high efficiency, and built-in protection features makes it an excellent choice for a variety of electronic applications. Whether in consumer electronics or industrial systems, this voltage regulator provides a stable and efficient power supply, ensuring optimal performance of connected devices.