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LT3748IMS#PBF

产品分类: DC-DC稳压器
厂牌: ANALOG DEVICES
产品描述: Flyback No 42KHz Transistor Driver 1 300V 12V 100V 5V MSOP-16 贴片安装 4.04mm*3mm*860μm
供应商型号: 4026242
供应商: 海外现货
标准整包数: 1
ANALOG DEVICES DC-DC稳压器 LT3748IMS#PBF

LT3748IMS#PBF概述

    Product Introduction: LT3748 Flyback Controller
    The LT3748 is a highly efficient switching regulator controller specifically designed for the isolated flyback topology, capable of delivering high power outputs. This advanced controller operates using an internally regulated 7V supply to drive a low-side external N-channel power MOSFET. Unlike traditional designs, the LT3748 eliminates the need for either a third winding or opto-isolator for regulation by sensing the isolated output voltage directly from the primary-side flyback waveform. This feature significantly reduces complexity, cost, and physical size of the power supply, while enhancing reliability.
    Applications:
    The LT3748 is ideal for various demanding applications, including:
    - Telecom supplies: Up to 25W output with a 12V voltage.
    - Automotive power systems: Handling high-power requirements in vehicles.
    - Industrial applications: Suitable for isolated industrial power supplies.
    - Military and high-temperature environments: Operates reliably in extreme conditions.
    Technical Parameters
    The following table summarizes the key technical specifications of the LT3748:
    | Parameter | Min | Typ | Max | Units |

    | Input Voltage Range | 5 | 100 V |
    | Quiescent Current (Not Switching)| 0 | 1.75 mA |
    | INTVCC Voltage Range | 4.5 | 20 V |
    | INTVCC Dropout (VIN-VINTVCC) 0.7 V |
    | Maximum Gate Drive Current | 1.9 1.9 | A |
    | Frequency Range | Boundary Mode-dependent kHz |
    Product Features and Advantages
    The LT3748 offers a variety of unique features and benefits:
    1. Boundary Mode Operation: Ensures precise load regulation without the need for external resistors or capacitors.
    2. Direct Feedback Mechanism: No opto-isolator or third winding required, reducing component count and improving efficiency.
    3. Wide Input Voltage Range: Supports inputs from 5V to 100V, making it versatile for diverse applications.
    4. Programmable Soft Start and UVLO: Allows customization of startup behavior and protection against low-voltage conditions.
    5. Compact Design: Utilizes a high-voltage 16-lead MSOP package, minimizing footprint.
    Application Cases and Usage Recommendations
    Typical Application Example:
    An example application involves designing a 25W, 12V output isolated telecom supply. The setup includes a 4:1 step-down transformer and utilizes the LT3748's programmable soft start and undervoltage lockout features to ensure smooth startup and protection against abnormal operating conditions.
    Usage Suggestions:
    - Always locally bypass the VIN and INTVCC pins with capacitors to ensure stable operation.
    - For high-temperature environments, consider automotive-grade variants like the LT3748HMS#PBF or LT3748MPMS#PBF for enhanced reliability.
    Compatibility and Support
    The LT3748 is compatible with standard electronic components, particularly flyback transformers. It integrates seamlessly with other devices within the same supply chain. Analog Devices provides comprehensive support, including datasheets, application notes, and evaluation kits, facilitating easy adoption in new designs.
    Common Issues and Solutions
    | Issue | Solution |

    | Insufficient Quiescent Current | Verify proper connection of INTVCC pin. |
    | Voltage Regulation Errors | Adjust RFB and RREF resistor values. |
    | Gate Driver Oscillation | Implement correct RC compensation network. |
    Summary and Recommendation
    In conclusion, the LT3748 is a robust and efficient controller designed for

LT3748IMS#PBF参数

参数
同步整流器 No
最大输出电压 300V
功能 Step-Up/Step-Down
最小输出电压 12V
开关频率 42KHz
最大输入电压 100V
输出类型 Transistor Driver
拓扑 Flyback
最小输入电压 5V
输出数量 1
长*宽*高 4.04mm*3mm*860μm
通用封装 MSOP-16
安装方式 贴片安装
应用等级 汽车级
零件状态 在售
包装方式 管装

LT3748IMS#PBF厂商介绍

Analog Devices(简称ADI)是一家全球领先的半导体公司,专注于模拟、混合信号和数字信号处理(DSP)集成电路(IC)的设计、制造和营销。公司成立于1965年,总部位于美国马萨诸塞州的诺伍德。

ADI的主营产品主要分为以下几类:
1. 数据转换器:包括模数转换器(ADC)和数模转换器(DAC),广泛应用于通信、工业、医疗等领域。
2. 放大器和比较器:提供各种高性能放大器和比较器产品,用于信号放大、滤波和比较等。
3. 射频(RF)和微波产品:包括射频收发器、混频器、放大器等,应用于无线通信、**等领域。
4. 电源管理:提供电源转换、电源管理等解决方案,满足各种电源需求。
5. 接口和通信:包括以太网、串行通信等接口产品,用于数据传输和通信。
6. 处理器和DSP:提供高性能处理器和数字信号处理器,用于复杂信号处理和控制。

ADI的优势在于其在模拟和混合信号领域的深厚技术积累,以及对客户需求的深刻理解。公司不断推出创新产品,满足客户在各种应用场景下的需求,如5G通信、自动驾驶、工业自动化等。此外,ADI还提供全面的技术支持和定制化服务,帮助客户实现产品快速上市。

LT3748IMS#PBF数据手册

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ANALOG DEVICES DC-DC稳压器 ANALOG DEVICES LT3748IMS#PBF LT3748IMS#PBF数据手册

LT3748IMS#PBF封装设计

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价格梯度 中国香港交货 内地交货(含增值税)
1+ ¥ 90.5031
10+ ¥ 67.988
37+ ¥ 56.4204
111+ ¥ 49.1306
259+ ¥ 48.9028
518+ ¥ 48.6623
1036+ ¥ 48.4219
库存: 70
起订量: 18 增量: 1
交货地:
最小起订量为:10
合计: ¥ 679.88
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