MAX77818

双路输入、电源通路、3A开关模式充电器,带电量计

业内效率最高的开关模式充电器,方案尺寸较小,3.87mm x 3.61mm WLP封装


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说明

MAX77818将高性能3A开关充电器和专有的ModelGauge™ m5电量计集成于节省空间的WLP封装,是USB供电便携式设备的理想选择。智能电源通路充电器支持两路输入,带有反向阻塞和USB-OTG,集成全部功率开关,工作在较高开关频率,具有高效率,支持利用较小外部元件实现低热设计。Maxim ModelGauge m5算法既有库仑计出色的短期高精度、高线性度特性,又具有电压电量计优异的长期稳定性,而温度补偿还提供业内领先的计量精度。器件也集成两个高压输入LDO,可通过I2C接口灵活编程。

MAX77818: Simplified Functional Diagram MAX77818: Simplified Functional Diagram 放大+

关键特性

  • 智能电源通路、双路输入开关模式充电器
    • 高达13.4V工作电压/承受16V/4A (CHGIN)
    • 高达6V工作电压/1.26A (WCIN)
    • 反向漏电流保护
    • 反向升压,高达5.1V/1.5A (OTG)
    • 集成低损耗FET,实现3A充电/4.5A放电
    • 集成低损耗FET,实现3A充电/4.5A放电
    • 带保护的全功能充电器
    • 温度调节和JEITA兼容
  • ModelGauge m5电量计
    • 剩余工作时间及充满所需时间预测
    • 高精度电池容量(SOC)和剩余工作时间读数
      • 温度、老化和放电率补偿
      • 无需校准
      • 集成FET电流检测
      • 不需要空、满或空闲状态信息即可保证高精度
    • 低静态电流(IQ)
  • 两路高压输入LDO
  • I2C串行接口
  • 72焊球、3.867mm x 3.608mm、0.4mm焊球间距、WLP封装

应用

  • 蓝牙耳机
  • 手持式设备
  • 工业PC
  • 物联网(IoT)
  • 便携式医疗设备
  • 智能家居、传感器
  • 可穿戴、智能手表
  • 无线扬声器

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX77818EVSYS: MAX77818评估系统
产品可靠性报告: MAX77818.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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