Battery Charge Controllers | FAN54005

电池充电控制器，开关，200mA - 1.45 A，带 USB-OTG 升压稳压器

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FAN54005 结合了高度集成的开关模式充电器，可最大程度缩短使用 USB 电源的单锂离子电池充电时间，还结合了一个升压稳压器以便从电池为 USB 外围设备供电。充电参数和运行模式可通过 I2C 接口进行编程，该接口运行速度可达 3.4 Mbps。该充电器和升压稳压器电路会在 3 MHz 下进行切换，最大程度减小了外部无源组件的尺寸。FAN54005 以三个阶段提供电池充电：条件调节，恒定电流和恒定电压。为了确保 USB 合规性并最大程度减少充电时间，输入电流限值可由主处理器通过 I2C 接口进行更改。充电端接由可编程最低电流水平确定。带重置控制的安全计时器提供了 I2C 主机的安全备份。充电状态通过 I2C 端口报告给主机。该集成电路 (IC) 会在电池降至内部阈值以下时自动重启充电周期。如果去除了输入源，该集成电路则进入高阻抗模式，防止从电池到输入的泄漏。当片温度达到 120°C 时充电电流将降低，保护器件和 PCB 免受损坏。FAN54005 还可以根据系统命令作为升压稳压器运行。该升压稳压器包括了一个软启动，可限制电池的涌入电流，并与电池充电使用相同的外部组件。

  • Wireless Speakers, Headphones
  • IoT Devices
  • E-Cigs, Vapes
  • Toys, Drones, Digital Cameras
  • Cell Phones, Gaming Devices

  • 用于单体锂离子和锂聚合物电池组的全集成高效充电器
  • 充电电压精度：
  • 25°C 时为 ±0.5%
  • 0 至 125°C 时为 ±1%
  • Configurable for 200mA - 1.45A Systems using a single external resistor
  • ±5% 输入电流调节精度
  • ±5% 充电电流调节精度
  • 输入电压的最大绝对值为 20 V
  • 输入工作电压最大值为6 V
  • 可通过具有快速模式及其兼容性的高速 I2C 接口 (3.4Mb/s) 进行编程
  • 输入电流
  • 快速充电 / 终端电流
  • 充电器电压
  • 终端使能
  • 小尺寸 1 H 外部电感
  • 具有较宽占空比范围的 3 MHz 同步降压 PWM 控制器
  • VBUS经过1.8V稳压输出提供给辅助电路
  • 带复位控制功能的安全定时器
  • 防止电池漏电至VBUS的反向小漏电流
  • 动态输入电压控制通过弱输入电源减少充电电流
  • 5 V、500 mA 的升压模式，用于 USB OTG 3.0 V 到 4.5 V 的电池输入

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FAN54005UCX

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WLCSP-20

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Device: FAN54005UCX

Equivalent to wafer fab process: 32

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32

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1989480587

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Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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