LM2576SX-5.0/NOPB

Product Overview

Category

The LM2576SX-5.0/NOPB belongs to the category of voltage regulators.

Use

It is commonly used to regulate and control voltage levels in electronic circuits.

Characteristics

• Input Voltage Range: 4.75V to 40V
• Output Voltage: 5V
• Output Current: Up to 3A
• Efficiency: Up to 92%
• Switching Frequency: 52 kHz
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-263 (7-Lead DDPAK/TO-263)
• Packaging/Quantity: Tube/50 pieces per tube

Specifications

• The LM2576SX-5.0/NOPB is a step-down switching regulator that provides a fixed 5V output from an input voltage range of 4.75V to 40V.
• It can deliver a maximum output current of 3A with high efficiency, up to 92%.
• The device operates at a switching frequency of 52 kHz, ensuring stable and reliable performance.
• It is designed to operate within a wide temperature range, from -40°C to +125°C, making it suitable for various applications.
• The package type is TO-263 (7-Lead DDPAK/TO-263), which offers good thermal dissipation capabilities.

Pin Configuration

The LM2576SX-5.0/NOPB has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. VOUT (Output Voltage)
5. SW (Switch)
6. NC (No Connection)
7. NC (No Connection)

Functional Features

• Wide input voltage range allows for flexibility in different power supply applications.
• Fixed 5V output voltage provides a stable power source for various electronic devices.
• High efficiency helps to minimize power loss and maximize energy conversion.
• Overcurrent protection ensures the safety of the circuit and connected components.
• Thermal shutdown protection prevents damage due to excessive heat.

Advantages

• Wide input voltage range allows for compatibility with different power sources.
• Fixed output voltage simplifies circuit design and eliminates the need for additional voltage regulation components.
• High efficiency reduces power consumption and extends battery life in portable applications.
• Overcurrent and thermal shutdown protections enhance the reliability and safety of the device.

Disadvantages

• The LM2576SX-5.0/NOPB is not suitable for applications requiring adjustable output voltage.
• The switching frequency of 52 kHz may introduce audible noise in sensitive audio applications.

Working Principles

The LM2576SX-5.0/NOPB operates based on the principle of pulse-width modulation (PWM). It uses an internal oscillator to control the duty cycle of the switch, which regulates the output voltage. The feedback pin monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable 5V output.

Application Field Plans

The LM2576SX-5.0/NOPB can be used in various applications, including: 1. Power supplies for microcontrollers, sensors, and other low-power electronic devices. 2. Battery charging circuits for portable devices such as smartphones and tablets. 3. Automotive electronics, providing regulated power for car audio systems, lighting, and other accessories. 4. Industrial automation, where stable and efficient power supply is crucial for control systems and sensors. 5. Renewable energy systems, regulating voltage from solar panels or wind turbines for battery charging.

Alternative Models

Other alternative models that offer similar functionality to the LM2576SX-5.0/NOPB include: - LM2596S-5.0/NOPB - LM2575SX-5.0/NOPB - LM2596SX-5.0/NOPB

These models have comparable specifications and pin configurations, making them suitable replacements for the LM2576SX-5.0/NOPB in various applications.

In conclusion, the LM2576SX-5.0/NOPB is a voltage regulator that provides a fixed 5V output from a wide input voltage range. With its high efficiency, thermal protection, and overcurrent protection, it is a reliable choice for power supply applications in different fields.