LM2576SX-3.3

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LM2576SX-3.3

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IC REG BUCK 3.3V 3A TO263-5

  • HerstellerTexas Instruments

  • Herstellerteil #LM2576SX-3.3

  • Paket DDPAK-6

  • Auf Lager2570

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Spezifikationen

Attribut Wert
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series SIMPLE SWITCHER®
Part Status Obsolete
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 3.3V
Current - Output 3A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount

Übersicht

Description

The LM2576SX-3.3 is a monolithic integrated circuit that functions as a step-down voltage regulator. It is part of the LM2576 series, designed for efficient power conversion and capable of driving a 3A load with excellent line and load regulation. Specifically, the "-3.3" in its name indicates that it outputs a fixed 3.3V voltage. The device operates at a switching frequency of 52 kHz, which allows for the use of small external components and results in a compact overall design.
Key features include high efficiency, typically up to 80-90%, and a wide input voltage range from 4V to 40V, making it suitable for various applications. It also incorporates features such as thermal shutdown, current limiting, and output short circuit protection, which enhance reliability and safety.
The LM2576SX-3.3 is commonly used in power management applications where efficient step-down conversion and regulated output are required, such as in battery-powered devices, industrial equipment, and consumer electronics. Its TO-263 surface-mount packaging facilitates ease of use in PCB design.

Equivalent

The LM2576SX-3.3 is a step-down voltage regulator. Equivalent products include:
1. L4973V3.3 from STMicroelectronics
2. MC34063A with additional components for the same output
3. LM2596-3.3 by Texas Instruments
4. XL4015 for similar applications
5. MP1584 buck converter module
These components serve a similar function, but ensure to check specifications for compatibility with your specific requirements.

Features

The LM2576SX-3.3 is a step-down voltage regulator designed for efficiency and simplicity in power supply applications. Key features include:
1. Output Voltage: Fixed 3.3V.
2. Output Current: Capable of delivering up to 3A.
3. Efficiency: High efficiency up to 90%, reducing thermal concerns.
4. Input Voltage Range: Operates from 4V to 40V.
5. Switching Frequency: Fixed frequency of 52 kHz.
6. Integrated Switch: Contains an internal NPN switch, simplifying design.
7. Thermal Shutdown: Protects against overheating.
8. Current Limiting: Prevents damage due to overcurrent conditions.
9. Low Standby Current: Optimizes power consumption in idle mode.
10. Minimum External Components: Simplifies design with fewer components needed.
11. Various Package Options: Available in TO-220, TO-263, and TO-263 THIN packages.
These features make the LM2576SX-3.3 suitable for a wide range of applications, including power supplies for industrial, consumer electronics, and battery-operated devices.

Pinout

The LM2576SX-3.3 is a step-down voltage regulator designed to provide a fixed output voltage of 3.3V. It comes in a TO-263 surface-mount package and features a 5-pin configuration. Here’s a brief overview of the pin functions:
1. Input (Pin 1): Supplies the input voltage to the regulator. The input voltage should be higher than the desired output voltage.
2. Output (Pin 2): Provides the regulated 3.3V output voltage. This pin is connected to the load.
3. Ground (Pin 3): Common ground for both input and output. It serves as the reference point for all voltages.
4. Feedback (Pin 4): Used to set the output voltage by connecting to the output voltage node. It helps maintain the voltage regulation.
5. ON/OFF (Pin 5): An enable pin that allows the device to be turned on or off. Pulling this pin low shuts down the regulator to reduce power consumption.
The LM2576SX-3.3 is designed for efficiency and ease of use in applications requiring a 3.3V supply, supporting a current up to 3A.

Manufacturer

The LM2576SX-3.3 is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a range of electronic components, including integrated circuits, microcontrollers, and processors. The company is known for its innovation in analog and embedded processing products, which are used in a wide variety of applications across industries such as automotive, industrial, personal electronics, and communications. Texas Instruments focuses heavily on research and development to drive technological advancements and provide solutions that improve efficiency and performance in electronic systems.

Application

The LM2576SX-3.3 is a step-down voltage regulator designed for efficient power management. Its application areas include:
1. Consumer Electronics: Used in devices like televisions, DVD players, and gaming consoles for stable power supply.
2. Industrial Equipment: Powers sensors and control modules requiring a 3.3V supply.
3. Computing: Provides regulated power in computer peripherals and low-power computing devices.
4. Telecommunications: Supports stable voltage in modems, routers, and network switches.
5. Automotive Systems: Used in infotainment systems and other automotive electronic applications.
6. Embedded Systems: Powers microcontrollers and processors that operate on a 3.3V logic level.
The regulator's efficiency and reliability make it versatile for various applications requiring a 3.3V output.

Package

The LM2576SX-3.3 is a step-down voltage regulator from Texas Instruments. It is available in a TO-263 surface-mount package, also known as the D2PAK. This package is designed for efficient thermal management and is commonly used in applications requiring a compact and reliable power regulation solution.

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