LM2574HVM-3.3: Step-Down Voltage Regulator

The LM2574HVM-3.3 from Texas Instruments is a highly efficient, step-down (buck) voltage regulator that provides all the features necessary for a robust power management solution. Designed to convert a higher input voltage to a lower output voltage, the LM2574HVM-3.3 delivers a fixed output of 3.3 volts, making it an ideal choice for a wide range of electronic applications.

Key Features:

• Output Voltage: 3.3V fixed output, suitable for logic-level devices and microcontrollers.
• Output Current: Capable of delivering up to 0.5A of load current with excellent line and load regulation.
• High Efficiency: Integrated switch allows for up to 52% efficiency, reducing power loss and heat generation.
• Wide Input Range: Operates from a 4.75V to 40V input, accommodating a variety of power sources.
• Simple Design: Requires minimal external components for an easy-to-design solution.
• Thermal Shutdown: Built-in thermal shutdown and current limit protection enhance the safety and reliability of the device.
• Frequency Operation: 52 kHz fixed frequency internal oscillator ensures predictable operation and simplifies noise filtering.

Applications:

The LM2574HVM-3.3 is versatile and can be used in various applications such as:

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter (Buck-Boost)

Package and Quality:

This regulator comes in a TO-263 package, known for its good heat dissipation properties. Texas Instruments is committed to maintaining high-quality standards, ensuring that the LM2574HVM-3.3 meets the requirements of the most demanding electronic systems.

For detailed information, including pinouts, typical application circuits, and full electrical specifications, customers should refer to the official datasheet provided by Texas Instruments.