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LM3549SQ/NOPB

产品分类: LED驱动器
厂牌: TEXAS INSTRUMENTS
产品描述: I²C Step-Down (Buck),Step-Up (Boost) 705mA 3 2.7V 4.6V QFN 贴片安装,黏合安装
供应商型号: LM3549SQ/NOPB
供应商: 国内现货
标准整包数: 1000
TEXAS INSTRUMENTS LED驱动器 LM3549SQ/NOPB

LM3549SQ/NOPB概述

    Product Introduction
    The LM3549 is a high-efficiency, high-power sequential LED driver manufactured by Texas Instruments. Designed for applications such as portable video projectors, it features three independent constant current LED drivers along with a buck-boost switching converter capable of delivering up to 700mA of output current per channel. This device enables efficient driving of RGB LEDs, making it ideal for backlighting and lighting applications that require precise control over individual LED channels.
    Key Features:
    - Integrated buck-boost converter for enhanced efficiency.
    - Three programmable LED drivers offering ±6% current accuracy over temperature.
    - Programmable current limit and soft-start capabilities.
    - Built-in over-current and over-temperature protection mechanisms.
    - EEPROM memory for storing calibration data and current settings.
    - Support for I²C communication protocol for flexible parameter adjustment.
    Technical Specifications
    | Parameter | Value Range | Unit |
    |
    | Input Voltage Range | 2.7V to 5.5V | Volts |
    | Output Current per Channel | 107mA to 720mA | Milliamperes |
    | Switching Frequency | 2.25MHz to 2.55MHz | Megahertz |
    | Power Conversion Efficiency | Up to 95% | Percentage |
    | Operating Temperature Range | -30°C to +125°C | Celsius |
    | Fault Detection Interrupt | Active LOW, open-drain | Volt |
    Product Features and Advantages
    The LM3549 stands out in its class due to several unique features:
    1. Efficient Power Management: The integrated buck-boost converter ensures optimal power delivery to the LEDs while minimizing energy losses.
    2. Programmability: Users can program LED current settings via I²C interface or EEPROM, allowing for easy customization of brightness and color balance.
    3. Protection Mechanisms: Integrated protection against over-current, over-temperature, and short circuits ensures reliability and longevity of the device.
    4. Versatile Applications: Ideal for a wide range of applications including portable video projectors, automotive interior lighting, and consumer electronics.
    Application Case Studies and Usage Recommendations
    Example Application: Portable Video Projectors
    The LM3549 is particularly well-suited for portable video projectors where precise control over LED brightness and color is crucial. Its ability to sequence through multiple colors in quick succession ensures accurate white balance without compromising system efficiency.
    Recommendations:
    - Utilize the built-in EEPROM for storing default settings to ensure consistent performance across various operational conditions.
    - Implement PWM input for dynamic brightness adjustments in real-time scenarios like gaming or presentations.
    Compatibility and Support
    The LM3549 supports compatibility with standard I²C buses and works seamlessly with existing systems incorporating similar interfaces. Texas Instruments offers comprehensive documentation, including datasheets and application notes, to assist developers in integrating this component into their designs.
    Common Issues and Solutions
    | Problem | Solution |

    | Unexpected Shutdown | Verify that EN pin is held high |
    | Inconsistent Brightness | Recalibrate current settings using EEPROM|
    | High Heat Generation | Improve thermal management with heatsinks|
    Summary and Recommendation
    The LM3549 is an advanced LED driver solution that combines high performance with ease of use, making it an excellent choice for demanding applications requiring high brightness and precise color control. With robust protection features a

LM3549SQ/NOPB参数

参数
输出电流 705mA
拓扑 Step-Down (Buck),Step-Up (Boost)
调光方式 I²C
最大输出电压 4.6V
效率 -
最小输出电压 2.7V
最小输入电压 -
输出数量 3
最大输入电压 -
功率 -
通用封装 QFN
安装方式 贴片安装,黏合安装
零件状态 在售
包装方式 卷带包装

LM3549SQ/NOPB厂商介绍

Texas Instruments(简称TI),是一家总部位于美国德克萨斯州达拉斯的全球性半导体设计与制造公司,成立于1930年。TI是全球领先的模拟技术、数字信号处理和微控制器(MCU)领域的供应商。

主营产品分类:
1. 模拟产品:包括电源管理、信号链和接口产品,广泛应用于工业、汽车、医疗等领域。
2. 嵌入式处理:包括微控制器(MCU)、数字信号处理器(DSP)和处理器,广泛应用于消费电子、工业控制、汽车电子等领域。
3. 无线产品:包括无线通信模块和解决方案,应用于物联网、智能城市、智能家居等领域。
4. 计算器:TI也是知名的计算器制造商,拥有多款科学计算器和图形计算器产品。

应用领域:
TI的产品和技术广泛应用于通信、计算机、消费电子、汽车、工业、医疗等多个领域。

优势:
1. 技术创新:TI在模拟、嵌入式处理和无线通信领域拥有强大的研发实力和专利技术。
2. 产品多样性:TI提供广泛的产品线,满足不同客户的需求。
3. 客户支持:TI在全球设有技术支持中心,为客户提供专业的技术支持和解决方案。
4. 供应链管理:TI拥有强大的供应链管理能力,确保产品的稳定供应和交付。

LM3549SQ/NOPB数据手册

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TEXAS INSTRUMENTS LED驱动器 TEXAS INSTRUMENTS LM3549SQ/NOPB LM3549SQ/NOPB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)
1000+ ¥ 32.0606
2000+ ¥ 31.2455
3000+ ¥ 30.4304
库存: 32000
起订量: 1000 增量: 1000
交货地:
最小起订量为:1000
合计: ¥ 32060.6
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