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MAX745EAP

产品分类: 电池管理芯片
厂牌: MAXIM INTEGRATED
产品描述: 4A(Max) 6V 18V(Max) 锂离子电池 SOP 贴片安装
供应商型号: CSCS-MAX745EAP
供应商: 海外现货
标准整包数: 1
MAXIM INTEGRATED 电池管理芯片 MAX745EAP

MAX745EAP概述

    # MAX745 Switch-Mode Lithium-Ion Battery Charger
    Product Introduction
    The MAX745 is a highly efficient switch-mode lithium-ion (Li+) battery charger designed to provide reliable and precise charging for battery packs. It supports charging for 1 to 4 Li+ cells and offers regulated charging currents of up to 4A without overheating. With its exceptional voltage regulation accuracy (±0.75%) and ability to use low-cost components, the MAX745 is ideal for applications requiring both cost-efficiency and performance.
    Key Applications:
    - Li+ Battery Packs
    - Desktop Cradle Chargers
    - Cellular Phones
    - Notebook Computers
    - Hand-Held Instruments
    Technical Parameters
    The MAX745 offers robust features essential for efficient and safe battery charging. Below are key technical specifications:
    | Parameter | Typical Value |

    | Charging Current | Up to 4A |
    | Voltage Regulation Accuracy | ±0.75% |
    | Operating Input Voltage | 6V to 24V |
    | Output Voltage | 4V to 4.4V |
    | Switching Frequency | 300kHz |
    | Efficiency | Up to 90% |
    | Maximum Power Dissipation | 640mW |
    | Input Voltage Range | -0.3V to 26V |
    Additional critical parameters include:
    - Dual-loop control for seamless voltage and current regulation.
    - Internal error amplifiers for precise current and voltage control.
    - Up to 24V input voltage support and 18V maximum battery voltage.
    Product Features and Advantages
    The MAX745 stands out due to its:
    - Precision Voltage Regulation: Achieves ±0.75% total error using standard 1% resistors.
    - Efficiency: Operates at 90% efficiency, minimizing heat generation and energy loss.
    - Cost-Effective Design: Utilizes low-cost resistors and an N-channel MOSFET for power switching.
    - Flexibility: Adjustable per-cell voltage via pin-strapping and external resistor-dividers.
    - Safety: Includes thermal shutdown protection to prevent overheating.
    These features make the MAX745 a competitive choice for a wide range of portable and stationary electronic devices.
    Application Case Studies and Usage Recommendations
    Example 1: Desktop Cradle Chargers
    In desktop cradle chargers, the MAX745 ensures rapid and consistent charging of mobile devices without excessive heating. For optimal performance:
    - Use a well-designed PCB layout to minimize parasitic resistance and capacitance.
    - Ensure the current-sense resistor (R1) and feedback resistor values are correctly matched to desired current and voltage settings.
    Example 2: Cellular Phones
    For mobile phone chargers, the MAX745's compact footprint and efficient design help maximize charging speed while keeping the system cool. Suggested practices include:
    - Fine-tuning the SETI pin voltage to match the specific battery pack capacity.
    - Employing thermal management solutions to ensure prolonged battery health.
    Compatibility and Support
    The MAX745 operates seamlessly with various lithium-ion batteries and is compatible with existing PCB designs incorporating standard N-channel MOSFETs and resistors. Maxim Integrated provides extensive documentation, application notes, and evaluation kits to assist with integration and troubleshooting.
    Common Issues and Solutions
    | Issue | Solution |

    | Overheating | Implement thermal management solutions |
    | Inconsistent Charging Current | Verify and recalibrate SETI and VADJ values |
    | Charger Fails to Turn Off | Check THM/SHDN pin connection |
    Conclusion and Recommendation
    The MAX745 switch-mode lithium-ion battery charger excels in precision, efficienc

MAX745EAP参数

参数
最小输出电压 -
故障保护 -
输出电流 4A(Max)
最大工作供电电压 -
接口类型 -
最大输出电压 18V(Max)
功能 -
电池类型 锂离子电池
最小工作供电电压 6V
通用封装 SOP
安装方式 贴片安装
零件状态 在售
包装方式 卷带包装

MAX745EAP厂商介绍

Maxim Integrated(美信集成)是一家全球领先的半导体设计公司,专注于模拟、混合信号和微处理器解决方案。公司成立于1983年,总部位于美国加州圣何塞。

Maxim Integrated的主要产品分为以下几类:
1. 电源管理:包括电源管理IC、电池管理、电源转换器等,广泛应用于移动设备、工业控制等领域。
2. 微控制器:包括微处理器、微控制器等,应用于智能家居、物联网、医疗设备等领域。
3. 接口产品:包括以太网、串行通信、USB等接口产品,应用于通信、计算机等领域。
4. 传感器:包括温度、湿度、压力等传感器,应用于汽车、工业控制等领域。
5. 射频和无线:包括无线通信、射频放大器等产品,应用于无线通信、**通信等领域。

Maxim Integrated的优势在于:
1. 强大的研发能力:拥有超过4000项专利,持续推出创新产品。
2. 丰富的产品线:提供超过7万种产品,满足不同客户的需求。
3. 广泛的应用领域:产品广泛应用于消费电子、工业、汽车等领域。
4. 优质的客户服务:提供技术支持、定制解决方案等服务,满足客户的个性化需求。

MAX745EAP数据手册

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MAXIM INTEGRATED 电池管理芯片 MAXIM INTEGRATED MAX745EAP MAX745EAP数据手册

MAX745EAP封装设计

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