LM2576T-5.0

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LM2576T-5.0

IC REG BUCK 5V 3A TO220-5

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  • 製造商。 部分 #LM2576T-5.0
  • 包 TO-220 (KC)-5
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規格

Package Tube
Series SIMPLE SWITCHER®
ProductStatus Not For New Designs
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 4V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 5V
Current-Output 3A
Frequency-Switching 52kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Through Hole
Package/Case TO-220-5

概述

Description

The LM2576T-5.0 is a voltage regulator from the LM2576 series, designed by Texas Instruments. It is a monolithic integrated circuit that provides efficient step-down (buck) voltage conversion. The "5.0" in its designation indicates that it is fixed to output a 5V voltage. This regulator is capable of delivering up to 3A of output current with high efficiency, typically around 75-80%.
Key features include a wide input voltage range (7V to 40V), a fixed output voltage of 5V, and an on-chip frequency compensation for ease of use. It also offers internal thermal shutdown and current limit protection for safety and reliability. The LM2576T-5.0 is known for its simple design, requiring minimal external components, which makes it ideal for a variety of applications like power supplies for microcontrollers, industrial equipment, and consumer electronics.
The package type "T" indicates a TO-220 package, which efficiently dissipates heat, making it suitable for applications that require robust thermal performance. Overall, the LM2576T-5.0 is valued for its simplicity, reliability, and cost-effectiveness in DC-DC conversion tasks.

Features

The LM2576T-5.0 is a monolithic integrated circuit that provides a simple, efficient solution for step-down (buck) voltage regulation. Key features include:
1. Fixed Output Voltage: It delivers a fixed output voltage of 5.0V.
2. Output Current: Capable of driving up to 3A load with excellent line and load regulation.
3. Wide Input Voltage Range: Operates with an input voltage range from 7V to 40V.
4. High Efficiency: Typically achieves efficiency up to 88%, reducing heat generation and improving overall performance.
5. Simple Design: Requires only a few external components, making it suitable for compact circuit designs.
6. Integrated Features: Includes features such as a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown for reliable operation.
7. Low Quiescent Current: It has a low standby current, maximizing power savings in off-mode.
8. Standard TO-220 Package: Provided in a TO-220 package, facilitating easy installation and heat dissipation.
Overall, the LM2576T-5.0 is ideal for applications requiring efficient and stable voltage regulation with straightforward implementation.

Package

The LM2576T-5.0 is typically available in a TO-220 package type. This package is a through-hole design, suitable for power applications, and helps in efficient thermal management due to its metal tab, which can be attached to a heat sink for improved heat dissipation.

Pinout

The LM2576T-5.0 is a fixed-output voltage regulator in the LM2576 series, providing a 5.0V output. It is a 5-pin IC with the following pin configuration and functions:
1. Vin: Input voltage pin where the unregulated voltage is applied.
2. Output: Provides the regulated output voltage of 5.0V.
3. Ground: Common ground pin for the input, output, and feedback connections.
4. Feedback: Used to set the output voltage in adjustable regulators, but is internally connected for fixed versions like the 2576-5.0.
5. ON/OFF: This pin is used to enable or disable the regulator. A low signal (or connecting to ground) turns the regulator ON, while a high signal (or connecting to Vin) turns it OFF.
The LM2576T-5.0 is commonly used for step-down (buck) conversion in power supply applications due to its efficiency and simplicity.

Manufacturer

The LM2576T-5.0 is a voltage regulator manufactured by Texas Instruments. Texas Instruments, commonly referred to as TI, is an American technology company that specializes in designing and manufacturing semiconductors and various integrated circuits. They are known for their significant contributions to the electronics industry, providing components for a wide range of applications, including consumer electronics, automotive systems, and industrial equipment.

Application

The LM2576T-5.0 is a step-down voltage regulator used in applications requiring efficient power conversion. It is commonly used in power supply solutions for microcontrollers, batteries, and embedded systems, and is suitable for consumer electronics, industrial automation, automotive systems, and distributed power architectures where a 5V output is required. Its features include high efficiency, minimal external components, and a wide input voltage range, making it ideal for designing compact and reliable power management systems.

Equivalent

Equivalent products to the LM2576T-5.0 voltage regulator include:
1. L4971 by STMicroelectronics
2. MC34063 by ON Semiconductor
3. XL4015 by XLSEMI
4. LT1074 by Analog Devices
5. LM2676 by Texas Instruments
These alternatives vary in terms of current handling, efficiency, and features, so ensure compatibility with your application before substituting.

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