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LT3473EDD

产品分类: DC-DC稳压器
厂牌: ANALOG DEVICES
产品描述: 1.4MHz Adjustable 1 36V(Max) 16V 2.2V DFN 支架安装,贴片安装 3mm(长度)*3mm(宽度)
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标准整包数: 0
ANALOG DEVICES DC-DC稳压器 LT3473EDD

LT3473EDD概述

    LT3473/LT3473A Micropower Step-Up DC/DC Converter: Comprehensive Product Overview
    Product Introduction
    The LT3473/LT3473A are highly efficient micropower step-up DC/DC converters designed for compact applications requiring boost functionality. These converters are optimized for use in battery-powered devices such as OLED displays and CCD systems. They integrate several critical features including an internal 1A switch, an integrated Schottky diode, and an output disconnect circuit, making them ideal for environments where space and efficiency are critical.
    These devices come in two variations: the LT3473 (in an 8-lead package) and the LT3473A (with additional auxiliary NPN transistors in a 12-lead package). Their applications span from powering OLED bias circuits to driving intermediate voltages in imaging sensors.
    Technical Parameters
    Below is a summary of key technical specifications for the LT3473/LT3473A:
    | Parameter | Value |

    | Input Voltage Range | 2.2V to 16V |
    | Switching Frequency | 1.2MHz |
    | Output Voltage | Up to 34V |
    | Maximum Output Current | 80mA |
    | Quiescent Current | 150µA (Active Mode), 1µA (Shutdown Mode) |
    | Shutdown Threshold Voltage | 1.4V (Enable), 0.2V (Disable) |
    | Efficiency at Light Load | >80% (Automatic Burst Mode) |
    | Operating Temperature Range | –40°C to 85°C |
    Key advantages include:
    - Tiny footprint (3mm × 3mm or 4mm × 3mm DFN packages).
    - High switching frequency (1.2MHz) for efficient inductor selection.
    - Integrated Schottky diode for reduced external component count.
    - Integrated output disconnect to isolate the load during shutdown.
    Product Features and Advantages
    The LT3473/LT3473A stand out due to their:
    - Micro-power operation: Minimizes energy consumption in both active and shutdown modes.
    - High efficiency: Maintains >80% efficiency even at light loads via Burst Mode operation.
    - Integration of key components: Eliminates the need for external Schottky diodes and PNP transistors, reducing bill-of-materials (BOM) costs.
    - Advanced thermal management: Built-in thermal shutdown ensures robust performance under adverse conditions.
    - Customizable output voltage: The external CTRL pin allows dynamic adjustments to the output voltage during operation.
    This combination of features makes the LT3473/LT3473A ideal for applications requiring minimal footprint, energy efficiency, and precise output control.
    Application Case Studies and Usage Recommendations
    Case Study 1: OLED Biasing
    The LT3473/LT3473A are commonly used to provide bias voltages for OLED displays. A typical setup involves connecting the VIN pin to a Li-Ion battery and setting the output voltage to around 15V. To optimize efficiency, users should select a low DCR inductor (e.g., Coilcraft DO1605T-682) and use an input capacitor (e.g., Taiyo Yuden 4.7µF X5R ceramic).
    Recommendation: Always ensure proper bypassing of the input and output with ceramic capacitors (X5R/X7R type) to stabilize the circuit.
    Case Study 2: CCD Biasing
    For CCD imaging systems, the LT3473A variant is preferred due to its integrated auxiliary NPN transistors, which allow generation of intermediate voltages. A configuration involving multiple output nodes enables simultaneous powering of different stages of the sensor.
    Recommendation: Use larger output capacitors (e.g., 2.2µF) for better transient response in high-current applications.
    Compatibility and Support
    The LT3473/LT3473A are compatible with a wide range of external components and support tools such as design simulators and evaluation boards. Linear Technology (now part of Analog Devices) provides comprehensive document

LT3473EDD参数

参数
最大输出电压 36V(Max)
输出数量 1
最大输入电压 16V
开关频率 1.4MHz
同步整流器 -
输出类型 Adjustable
最小输入电压 2.2V
拓扑 -
功能 -
最小输出电压 -
长*宽*高 3mm(长度)*3mm(宽度)
通用封装 DFN
安装方式 支架安装,贴片安装

LT3473EDD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。

LT3473EDD数据手册

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ANALOG DEVICES DC-DC稳压器 ANALOG DEVICES LT3473EDD LT3473EDD数据手册

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