Overview
The LM2576-5.0BU is a step-down voltage regulator produced by Microchip Technology, designed to efficiently convert higher input voltages to a stable 5V output. This monolithic switching regulator is part of the LM2576 series, known for its simplicity, reliability, and cost-effectiveness. It is widely used in various applications requiring a regulated 5V power supply. The LM2576-5.0BU is particularly suited for designers looking for a robust, easy-to-implement solution with minimal external components. Its market positioning targets industrial, automotive, and consumer electronics applications where efficient power conversion is critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 5.0 | V | Fixed output |
| Input Voltage Range | 4.75 to 40 | V | |
| Output Current | 3.0 | A | Maximum |
| Switching Frequency | 52 | kHz | Typical |
| Efficiency | Up to 88 | % | Depending on conditions |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | TO-263-5 | D2PAK |
Key Features
- Simple and easy-to-use design with minimal external components.
- High efficiency up to 88%, reducing power loss and heat dissipation.
- Built-in fixed-frequency oscillator (52 kHz) for predictable performance.
- Integrated thermal shutdown and current limit protection for enhanced reliability.
- Wide input voltage range (4.75V to 40V) suitable for diverse applications.
Applications
The LM2576-5.0BU is ideal for a wide range of applications, including:
- Industrial Automation: Powering control systems, sensors, and actuators.
- Automotive Electronics: Providing regulated power for infotainment systems, lighting, and sensors.
- Consumer Electronics: Used in devices like routers, modems, and small appliances.
- Embedded Systems: Supplying stable 5V power to microcontrollers and peripherals.
Q & A
1. What is the maximum output current of the LM2576-5.0BU?
The maximum output current is 3.0A.
2. What is the input voltage range for this regulator?
The input voltage range is 4.75V to 40V.
3. Does the LM2576-5.0BU require external components?
Yes, but it requires minimal external components, such as an inductor, diode, and capacitors.
4. What is the typical switching frequency?
The typical switching frequency is 52 kHz.
5. Is this regulator suitable for automotive applications?
Yes, it is suitable for automotive electronics due to its wide input voltage range and robust design.
6. Does the LM2576-5.0BU have built-in protection features?
Yes, it includes thermal shutdown and current limit protection.
7. What is the efficiency of this regulator?
Efficiency can reach up to 88%, depending on operating conditions.
8. What package does the LM2576-5.0BU come in?
It is available in a TO-263-5 (D2PAK) package.
9. Can it operate in extreme temperatures?
Yes, it operates within a temperature range of -40°C to 125°C.
10. Is the output voltage adjustable?
No, the LM2576-5.0BU provides a fixed 5V output.
