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LM2674M-3.3

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供应商型号: 4518-LM2674M-3.3TR-ND
供应商: Digi-Key
标准整包数: 1
UMW/友台半导体  LM2674M-3.3

LM2674M-3.3概述

    DC-DC Switching Buck Converter — LM2674 Series
    Product Introduction
    The LM2674 series represents a highly efficient and reliable DC/DC switching buck converter. This series employs a fixed frequency PWM controller at 260 kHz for optimal performance. The converter integrates key functionalities such as internal frequency compensation, a fixed frequency oscillator, overcurrent protection, and an internal power switch. Its design enables driving loads up to 500mA with exceptional efficiency, low ripple, excellent linearity, and adaptive load regulation. With minimal external components required, the LM2674 offers a simple yet effective solution for implementing DC/DC voltage conversion and stabilization.
    This device includes an adjustable duty cycle ranging from 0% to 100%, allowing users to maximize efficiency across various load conditions. Furthermore, its enable pin supports on/off control, enabling flexible transitions between standby and operational states, thus enhancing application versatility.
    Technical Parameters
    Below are the key technical specifications for the LM2674 series:
    | Parameter | Symbol | Value |
    |
    | Input Voltage Range | VIN | 7V–40V |
    | Output Voltage (Fixed) | VOUT | 3.3V, 5V, 12V |
    | Adjustable Output Voltage | VOUT | 1.21V–37V |
    | Output Accuracy | ± | ±2% |
    | Switching Frequency | fosc | 225–275 kHz |
    | Maximum Output Current | IOUT | 500mA |
    | Minimum Dropout Voltage | VDO | 1.5V |
    Key characteristics include:
    - Fixed-frequency PWM operation (260 kHz)
    - Built-in overtemperature and overcurrent protection
    - High-precision output regulation
    - Hysteresis function on the enable pin
    - Simple peripheral design with few external components
    Product Features and Advantages
    The LM2674 series is characterized by several standout features:
    1. Built-in Overtemperature Shutdown: Ensures long-term reliability and safety.
    2. Overcurrent Protection: Protects the device during short-circuit events.
    3. Internal Power Switch: Integrated design minimizes external component count.
    4. High Efficiency and Linearity: Offers robust performance under varying load conditions.
    5. Wide Input Voltage Range: Supports a broad range of supply voltages, making it suitable for diverse applications.
    6. Adjustable Output Voltage: Offers flexibility for various system requirements.
    These advantages make the LM2674 ideal for use in applications requiring high efficiency and compact design.
    Application Cases and Usage Recommendations
    The LM2674 is well-suited for numerous applications, including:
    - LCD and LCD TVs: Efficient voltage regulation for backlight systems.
    - ADSL Modems: Stable power supply for critical electronic components.
    - LED Lighting: Suitable for both lighting and backlighting systems.
    - Telecommunications Equipment: Reliable power management in networking devices.
    To optimize performance, consider the following recommendations:
    - Ensure proper PCB layout to minimize parasitic inductances and capacitances.
    - Use high-quality inductors and capacitors for best results.
    - Proper thermal management is crucial for prolonged reliability, especially in high-power applications.
    Compatibility and Support
    The LM2674 series is compatible with most standard power supplies and microcontrollers due to its versatile interface. UMW Semiconductor provides comprehensive support, including detailed datasheets, application notes, and customer service, ensuring smooth integration into your designs.
    Common Issues and Solutions
    | Issue | Solution |

    | Excessive Heat Dissipation | Add a heatsink or improve airflow around th

LM2674M-3.3参数

参数
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LM2674M-3.3厂商介绍

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LM2674M-3.3数据手册

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价格梯度 中国香港交货 内地交货(含增值税)
2500+ $ 1.222 ¥ 10.2266
库存: 2500
起订量: 2500 增量: 1
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最小起订量为:2500
合计: ¥ 25566.5
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