LM2574HVMX-5.0

Imagens apenas para referência

LM2574HVMX-5.0

+Lista de Materiais

IC REG BUCK 5V 500MA 14SOIC

365 Garantia de Qualidade em 1 dia

7*24 Garantia de serviço em 24 horas

90-Garantia de pós-venda em 1 dia

Garantia de Produto Genuíno

Especificações

Atributo Valor
Package / Case Tape & Reel (TR),Cut Tape (CT),Bulk
Series SIMPLE SWITCHER®
Part Status Not For New Designs
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 60V
Voltage - Output (Min/Fixed) 5V
Current - Output 500mA
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount

Visão Geral

Description

The LM2574HVMX-5.0 is a high-efficiency, step-down voltage regulator designed by Texas Instruments. It is part of the LM2574 series and is specifically tailored for applications requiring a fixed output voltage of 5.0 volts. The device is capable of delivering up to 500 mA of output current with excellent line and load regulation.
Key features include a wide input voltage range (typically up to 60V for the "HV" or high voltage version), making it suitable for a variety of industrial and automotive applications. The LM2574HVMX-5.0 integrates a fixed-frequency oscillator (52 kHz) which helps simplify filtering design and reduces external component costs. It also comes with current limiting, thermal shutdown, and an ON/OFF pin for low power standby mode.
The device is available in a surface-mount package (often the SOIC-8 package), facilitating compact circuit design. Its versatility, ease of use, and reliability make it popular for power supply solutions that require stable 5V outputs from higher voltage sources.

Equivalent

The LM2574HVMX-5.0 is a step-down voltage regulator from Texas Instruments. Equivalent products include the LM2575HVM-5.0 from Texas Instruments, the MC34063A from ON Semiconductor, and the L4971 from STMicroelectronics. These alternatives offer similar functionality with varying specifications, so it's essential to compare the exact requirements such as output current, efficiency, and package type when selecting a replacement.

Features

The LM2574HVMX-5.0 is a monolithic integrated voltage regulator designed for step-down (buck) applications. Key features include:
1. Fixed Output Voltage: Delivers a stable 5.0V output.
2. Input Voltage Range: Capable of handling a wide input voltage range, typically up to 60V.
3. Output Current: Provides up to 500mA of load current.
4. Efficiency: High efficiency due to its switching regulation technique, typically around 80-90%.
5. Switching Frequency: Operates at a fixed frequency, minimizing output noise and simplifying filtering.
6. Thermal Shutdown: Integrated thermal protection to prevent damage due to overheating.
7. Current Limiting: Built-in current limiting for added protection in overload conditions.
8. Low Standby Current: Low power consumption when the device is not actively switching.
9. Ease of Use: Requires minimal external components, simplifying design and reducing board space.
10. Package: Available in a surface-mount package for ease of integration in various applications.
These features make it suitable for a variety of applications including automotive, industrial, and consumer electronics.

Pinout

The LM2574HVMX-5.0 is a monolithic integrated circuit that functions as a step-down (buck) voltage regulator. It provides a fixed output voltage of 5.0 volts. The device is available in an 8-pin surface-mount SOIC (Small Outline Integrated Circuit) package. Here are the key functions of its pins:
1. Vin: Input voltage pin, where the DC input voltage is applied.
2. Vout: The output voltage pin provides the regulated 5.0V output.
3. Ground (GND): Common ground pin for input and output voltages.
4. Feedback (FB): Connects internally to a fixed resistor divider network, specific for the 5.0V version, for controlling the output voltage.
5. ON/OFF: Shutdown control pin. When connected to ground, the regulator is turned on, and when connected to above 1.2V, the regulator is turned off.
6. Compensation (COMP): Internally connected for frequency compensation. Usually no external connection is required.
7. NC (No Connection): Not internally connected, typically left unconnected.
8. NC (No Connection): Similar to pin 7, not internally connected.
These pin functions are essential for integrating the LM2574HVMX-5.0 into electronic circuits for efficient voltage regulation.

Manufacturer

The LM2574HVMX-5.0 is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is a global semiconductor company that designs and produces a wide range of electronic components and solutions. It is well-known for its development and manufacturing of analog and embedded processing chips, which are used across various industries, including automotive, industrial, consumer electronics, and communications. Texas Instruments has a significant presence in the electronics industry and is recognized for its innovation and reliability in producing high-quality semiconductors and electronic devices.

Application

The LM2574HVMX-5.0 is a step-down voltage regulator commonly used in applications requiring efficient power conversion. Its primary application areas include:
1. Industrial Automation: For reliable power supply to microcontrollers and sensors.
2. Consumer Electronics: In devices like set-top boxes, modems, and televisions for efficient power management.
3. Automotive Systems: Used in infotainment systems and electronic control units.
4. Telecommunications: Provides power to networking equipment such as routers and switches.
5. Embedded Systems: Supplies power to processors and peripherals in embedded applications.
6. Battery-Powered Devices: Extends battery life by efficiently regulating voltage.

These applications benefit from the LM2574HVMX-5.0's ability to deliver stable output voltage with low power loss.

Package

The LM2574HVMX-5.0 is a step-down voltage regulator from Texas Instruments, formerly National Semiconductor. It typically comes in a surface-mount package known as DDA (also referred to as TO-252), which is a 7-lead package suited for automated assembly in commercial and industrial applications.

Produtos relacionados a LM2574HVMX-5.0