LM2576SX-12

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LM2576SX-12

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IC REG BUCK 12V 3A TO263-5

  • FabricanteTexas Instruments

  • Peça do Fabricante #LM2576SX-12

  • Pacote TO-263-6

  • Em Estoque5183

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Especificações

Atributo Valor
Package Tape & Reel (TR)
Series SIMPLE SWITCHER®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 4V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 12V
Current-Output 3A
Frequency-Switching 52kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case TO-263-6, D²Pak (5 Leads + Tab), TO-263BA

Visão Geral

Description

The LM2576SX-12 is a step-down voltage regulator designed to provide a fixed output voltage of 12V from a higher input voltage. It is part of the LM2576 series, which are monolithic integrated circuits that simplify the design of power supplies. This regulator is capable of delivering an output current up to 3A with high efficiency, thanks to its switching regulator technology. Key features of the LM2576SX-12 include a wide input voltage range, typically from 4V to 40V, and a fixed 12V output, making it suitable for a variety of applications in consumer electronics and industrial systems.
The device offers features like a low standby current, thermal shutdown, and current limiting to ensure reliability and protect against overloads. The LM2576SX-12 is available in a TO-263 surface-mount package, which aids in efficient thermal management. It is widely used in power management for applications that require efficient step-down voltage conversion, such as battery chargers, automotive power systems, and distributed power systems.

Equivalent

Equivalent products to the LM2576SX-12, a step-down voltage regulator, include:
1. LM2596-12: A similar step-down voltage regulator with the same output voltage.
2. L4971: A step-down switching regulator with comparable functionality.
3. MC34063: A versatile DC-DC converter that can perform step-down operations.
4. L78S12: A linear voltage regulator that can be used for similar applications, though less efficient.
5. XL4012: A high-efficiency step-down converter module.
Always verify the specifications to ensure compatibility with your specific application.

Features

The LM2576SX-12 is a step-down voltage regulator designed for efficient power management, featuring a fixed output voltage of 12V. It can deliver up to 3A of output current with high efficiency, typically around 77% to 88%, minimizing heat generation and improving reliability. The device operates at a switching frequency of 52 kHz, allowing for smaller external components and compact design.
Additional features include:
1. Wide Input Voltage Range: Operates from 4V to 40V, suitable for a variety of applications.
2. Low Quiescent Current: Helps extend battery life in portable applications.
3. Thermal Shutdown: Protects the device from damage due to overheating.
4. Current Limiting: Prevents output overloads by limiting the current output.
5. Requires Minimal External Components: Simplifies the design and reduces cost.
6. TTL Shutdown Capability: Allows the regulator to be turned off by a logic signal, reducing power consumption.
These features make the LM2576SX-12 ideal for a wide range of applications, including power supplies for industrial, automotive, and consumer electronic devices.

Pinout

The LM2576SX-12 is a 5-pin voltage regulator. It is part of the LM2576 series of simple switcher power converters and is designed for step-down (buck) applications. The specific "-12" in its name indicates that it outputs a fixed 12V. Here is a brief overview of its pin functions:
1. Pin 1 (VIN): Input voltage pin. This is where the unregulated input voltage is applied.
2. Pin 2 (Output): Output voltage pin. This pin provides the regulated 12V output.
3. Pin 3 (Ground): Common ground pin. It serves as the electrical ground reference.
4. Pin 4 (Feedback): This pin is used for voltage feedback to maintain output voltage regulation. It senses the output voltage and feeds it back to the internal comparator.
5. Pin 5 (ON/OFF): This pin can be used to turn the regulator on and off. A low voltage turns the regulator on, and a high voltage turns it off.
The LM2576 is typically used in power supply applications where efficient voltage conversion and regulation are required.

Manufacturer

The LM2576SX-12 is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. They are one of the largest semiconductor companies in the world and focus on developing analog chips and embedded processors, which are used in a wide range of electronics applications. The company's products are utilized in various industries, including automotive, industrial, consumer electronics, and communications. Texas Instruments is well-known for its innovation and engineering expertise, maintaining a strong emphasis on research and development to advance semiconductor technology.

Application

The LM2576SX-12 is a step-down voltage regulator commonly used in applications requiring a stable 12V output from a higher input voltage. Key application areas include:
1. Power Supply Solutions: Used in regulated power supplies for electronic circuits.
2. Industrial Equipment: Provides power regulation in industrial control systems.
3. Consumer Electronics: Powers devices such as LCD monitors, TVs, and other appliances.
4. Battery-Powered Devices: Extends the battery life by efficiently managing power.
5. Embedded Systems: Supplies regulated voltage to microcontrollers and processors.
6. Automotive Electronics: Used in automotive power systems for voltage conversion.
These applications benefit from the LM2576SX-12's efficiency, simplicity, and ability to handle up to 3A output current.

Package

The LM2576SX-12 is a voltage regulator in a TO-263 surface-mount package. It is part of the LM2576 series, which are step-down (buck) voltage regulators designed for easy and efficient power management applications. The "SX" designation typically indicates a surface-mount package style, which is suitable for automated assembly processes in electronic manufacturing.

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