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LTC1624

产品分类: DC-DC稳压器
厂牌: ANALOG DEVICES
产品描述: High Efficiency SO-8 N-Channel Switching Regulator Contoller
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ANALOG DEVICES DC-DC稳压器 LTC1624

LTC1624概述

    LTC1624 N-Channel MOSFET Driver: A Comprehensive Guide
    Product Introduction
    The LTC1624 is a versatile current-mode switching regulator controller designed to drive an external N-channel power MOSFET. Its primary applications include boosting, step-down, SEPIC, and inverting regulators, making it suitable for various electronic devices requiring high efficiency and stable power delivery. The product supports a wide input voltage range (3.5V to 36V) and offers flexible output voltage regulation, ranging from 1.19V to 30V in step-down configurations. Its ±1% reference accuracy ensures precise output voltage control, and its low standby current makes it ideal for battery-powered applications.
    Key features include:
    - N-channel MOSFET drive capability
    - Supports multiple switching configurations
    - Wide input voltage range: 3.5V to 36V
    - ±1% reference voltage accuracy
    - Low dropout operation (95% duty cycle)
    - Logic-controlled micropower shutdown
    - Compact 8-pin SO package
    Applications include notebook and palmtop computers, cellular telephones, wireless modems, battery-operated digital devices, DC power distribution systems, and battery chargers.
    Technical Parameters
    | Parameter | Specification |

    | Input Voltage Range | 3.5V to 36V |
    | Output Voltage Range (Step-Down) | 1.19V to 30V |
    | Reference Voltage Accuracy | ±1% |
    | Maximum Duty Cycle | 95% |
    | Operating Frequency | Fixed 200kHz |
    | Shutdown Current | 16µA to 30µA |
    | Peak Driver Output Current | <10µs |
    | Junction Temperature Range | 0°C to 70°C (CS Grade); –40°C to 85°C (IS Grade) |
    | Storage Temperature Range | –65°C to 150°C |
    The LTC1624 operates within a temperature range of 0°C to 70°C for the CS grade and –40°C to 85°C for the IS grade, with a maximum junction temperature of 125°C.
    Product Features and Advantages
    The LTC1624 excels in delivering high efficiency, particularly in battery-operated systems where extended operating time is critical. Key advantages include:
    - Boost Converter Capability: Handles input voltages as low as 3.5V.
    - Wide Output Range: Adjustable outputs from 1.19V to 30V.
    - Current Mode Operation: Ensures excellent line and load transient response.
    - Low Standby Current: Reduces power consumption in idle states.
    - Remote Output Voltage Sensing: Maintains precise voltage regulation over long distances.
    Its ability to support multiple configurations (boost, step-down, SEPIC, inverting) makes it highly versatile, enabling developers to tailor solutions for diverse applications.
    Application Case Studies and Usage Recommendations
    The LTC1624 is commonly used in step-down converter circuits. For example, Figure 1 demonstrates a high-efficiency step-down converter configuration using the LTC1624, achieving efficiencies of up to 95%. Here are some practical recommendations for implementing this solution:
    1. Component Selection: Choose RSENSE values based on required output current, typically between 0.005Ω and 0.5Ω.
    2. Inductor Choice: Optimize inductance to balance ripple current and efficiency, with typical values ranging from 5µH to 68µH.
    3. Power MOSFET Selection: Use logic-level MOSFETs compatible with INTVCC voltages. Ensure BVDSS specifications meet your system's requirements.
    4. Layout Considerations: Properly decouple the VIN pin and ensure adequate ground connections to minimize noise and improve stability.
    For low current operation, enable Burst Mode by configuring the ITH/RUN pin to detect minimum lo

LTC1624参数

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LTC1624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。

LTC1624数据手册

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