Overview
The LM2576-5.0WU-TR is a step-down (buck) switching voltage regulator produced by Microchip Technology. It is designed to provide a fixed 5.0V output voltage with a wide input voltage range, making it suitable for various power supply applications. This product is part of the LM2576 series, known for its efficiency, reliability, and ease of use. It is widely used in industrial, automotive, and consumer electronics due to its robust design and cost-effectiveness.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 5.0 | V | Fixed |
| Input Voltage Range | 4.75 to 40 | V | |
| Output Current | 3.0 | A | Max |
| Switching Frequency | 52 | kHz | Typical |
| Efficiency | 77 to 88 | % | Depending on load |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | TO-263-5 | Surface Mount | |
| Protection Features | Overcurrent, Thermal Shutdown |
Key Features
- High Efficiency: Reduces power loss and heat generation.
- Wide Input Voltage Range: Suitable for various applications.
- Fixed 5.0V Output: Simplifies design and reduces external components.
- Built-in Protection: Includes overcurrent and thermal shutdown for safety.
- Compact Package: TO-263-5 surface mount package saves space.
Applications
The LM2576-5.0WU-TR is ideal for a wide range of applications, including:
- Industrial Power Supplies: Provides stable power for control systems and sensors.
- Automotive Electronics: Suitable for in-vehicle power management.
- Consumer Electronics: Used in devices like routers, set-top boxes, and audio equipment.
- Telecommunications: Ensures reliable power for communication devices.
Q & A
1. What is the maximum input voltage for the LM2576-5.0WU-TR?
The maximum input voltage is 40V.
2. Can this regulator handle a 3A load?
Yes, it can handle a maximum output current of 3A.
3. What is the typical switching frequency?
The typical switching frequency is 52kHz.
4. Does it include thermal protection?
Yes, it features thermal shutdown protection.
5. Is the output voltage adjustable?
No, the output voltage is fixed at 5.0V.
6. What is the operating temperature range?
It operates from -40°C to +125°C.
7. What package does it come in?
It comes in a TO-263-5 surface mount package.
8. Is it suitable for automotive applications?
Yes, it is suitable for automotive electronics.
9. What is the efficiency range?
The efficiency ranges from 77% to 88%, depending on the load.
10. Does it require external components?
It requires minimal external components for operation.
