Overview
The LM2576T-15/NOPB is a highly efficient, 3A step-down (buck) switching regulator produced by Texas Instruments. This IC is designed to convert higher input voltages to a stable 15V output, making it ideal for a wide range of power supply applications. It is part of the LM2576 series, known for its reliability, efficiency, and ease of use. The TO-220 package ensures robust thermal performance, and its built-in protection features, such as thermal shutdown and current limiting, enhance its durability in demanding environments. This product is particularly suited for industrial, automotive, and consumer electronics applications where efficient power conversion is critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | 4.5 to 40 | V | |
| Output Voltage | 15 | V | Fixed |
| Output Current | 3 | A | |
| Switching Frequency | 52 | kHz | |
| Efficiency | 75 to 88 | % | |
| Operating Temperature | -40 to 125 | °C | |
| Package | TO-220 | 5-pin | |
| Protection Features | Thermal Shutdown, Current Limiting |
Key Features
- High efficiency step-down conversion, reducing power loss and heat generation.
- Built-in thermal shutdown and current limiting for enhanced reliability.
- Fixed 15V output voltage, simplifying design and reducing component count.
- Wide input voltage range (4.5V to 40V) for versatile applications.
- TO-220 package ensures excellent thermal performance and ease of mounting.
Applications
The LM2576T-15/NOPB is widely used in various industries due to its robust performance and efficiency. In industrial automation, it powers control systems and sensors. In automotive electronics, it is employed in infotainment systems and onboard power supplies. Consumer electronics, such as routers and set-top boxes, also benefit from its stable power delivery. Additionally, it is suitable for battery-powered devices, where efficient power conversion is essential to extend battery life.
Q & A
1. What is the maximum input voltage for the LM2576T-15/NOPB?
The maximum input voltage is 40V.
2. Can the output voltage be adjusted?
No, the LM2576T-15/NOPB provides a fixed 15V output.
3. What is the typical efficiency of this regulator?
The efficiency ranges from 75% to 88%, depending on operating conditions.
4. Does it include protection features?
Yes, it includes thermal shutdown and current limiting for protection.
5. What is the switching frequency?
The switching frequency is 52kHz.
6. Is it suitable for automotive applications?
Yes, it is well-suited for automotive electronics due to its robust design.
7. What package does it come in?
It is available in a TO-220 package.
8. Can it handle high current loads?
Yes, it can deliver up to 3A of output current.
9. What is the operating temperature range?
It operates from -40°C to 125°C.
10. How does it compare to linear regulators?
It is more efficient than linear regulators, especially for high input-to-output voltage differences.
