LM2576SX-5.0

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LM2576SX-5.0

Switching Voltage Regulators

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Packaging MouseReel
Standard Pack Qty 500

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Description

The LM2576SX-5.0 is a step-down (buck) voltage regulator designed to provide a regulated output voltage of 5.0V with a maximum output current of 3A. It is part of the LM2576 series, which features adjustable and fixed output options, making it versatile for various applications.
This device operates efficiently, with a typical efficiency of up to 75%, and can accept input voltages ranging from 7V to 40V. Its design includes built-in thermal shutdown and current limit protection, ensuring safe operation in various conditions.
The LM2576SX-5.0 is often used in power supplies for consumer electronics, automotive applications, and industrial equipment. It also features a simple external component count, enabling easy integration into circuits.
This regulator is available in a TO-220 package, allowing for efficient heat dissipation. Overall, the LM2576SX-5.0 is a reliable choice for generating stable low-voltage power from higher-voltage sources.

Features

The LM2576SX-5.0 is a step-down (buck) voltage regulator with several key features:
1. Output Voltage: Fixed output voltage of 5.0V.
2. Input Voltage Range: Accepts input voltages from 7V to 40V.
3. Output Current: Capable of delivering up to 3A of output current.
4. High Efficiency: Typically achieves efficiencies of up to 75-90%, reducing heat generation.
5. Thermal Shutdown: Includes thermal protection to prevent overheating.
6. Short-Circuit Protection: Features current limiting to protect against short circuits.
7. Easy to Use: Requires minimal external components, simplifying circuit design.
8. Operating Frequency: Switching frequency of 52kHz, which helps in optimizing the size of inductors and capacitors.
9. Package Type: Available in a TO-220 or TO-263 package for easy mounting.
These characteristics make the LM2576SX-5.0 suitable for various applications, including power supplies, automotive systems, and battery chargers.

Package

The LM2576SX-5.0 is typically packaged in a TO-263 surface mount package. This package type features a compact design suited for space-constrained applications and provides effective heat dissipation.

Pinout

The LM2576SX-5.0 is a step-down voltage regulator from Texas Instruments. It comes in a 5-pin package, specifically in the TO-263 form factor.
Pin functions are as follows:
1. Input (Vin): Supplies the input voltage to the regulator.
2. Ground (GND): Common ground connection.
3. Output (Vout): Provides the regulated output voltage (5V nominal).
4. Feedback (Vfb): Connects to a resistor divider for output voltage regulation.
5. Switch (SW): Connects to the power switch inside the IC, which transfers energy to the output.
This device can handle up to 3A of load current and features thermal shutdown and current limiting for protection.

Manufacturer

The LM2576SX-5.0 is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments specializes in designing and manufacturing a wide range of analog and embedded processing chips. Founded in 1930, the company is known for its innovations in various electronic components and solutions, including power management, signal chain, and microcontrollers. TI serves diverse markets, including automotive, industrial, communications, and consumer electronics, providing products that enhance performance and efficiency in various applications.

Application

The LM2576SX-5.0 is a step-down (buck) voltage regulator commonly used in various applications such as power supply circuits for microcontrollers, sensors, and communication devices. It is suitable for battery-powered devices, automotive power systems, and LED drivers. Its efficiency and ability to provide a stable 5V output make it ideal for powering embedded systems and portable electronics.

Equivalent

Equivalent products to the LM2576SX-5.0 include the LM2596-5.0, LM2576-ADJ (adjustable version), and the LM2575-5.0. Other alternatives are the TPS5430 and the MIC2941. Ensure to check specifications such as output current, voltage, and thermal performance when selecting a substitute.

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