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The RT9528 is a programmable single-cell Li-ion battery charger with I<sup>2</sup>C programmable control I/F, Auto Power-Path Management IC and USB/AV Switch. For the RT9528, there is no need to use external MOSFET. The RT9528 enters sleep mode when supplies are removed. The RT9528 optimizes the charging task by using a control algorithm including pre-charge mode, fast charge mode and constant voltage mode. The RT9528 includes termination, timer, charge current and V<sub>SYS</sub> settings via a serial I<sup>2</sup>C control I/F.<br /><br />The RT9528 provides protections for the battery pack, charger and input circuitry such as over current, under voltage, over voltage, thermal regulation and thermal protection. Status can be monitored via the serial port for charge state and fault conditions.<br /><br />The internal thermal feedback circuitry regulates the die temperature to optimize the charge rate for all ambient temperatures.<br /><br />The recommended junction temperature range is -40&deg;C to 125&deg;C, and the ambient temperature range is -40&deg;C to 85&deg;C.
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  • 针对交流适配器的 28V 最高耐压设计
  • 自动电源路径管理 （ APPM ）功能
  • 支持高速 USB 操作
  • USB / Audia / Video 开关
  • 容许负极性音频信号通过
  • I2C 接口
  • 为温度检测电路提供 3.3V 输出
  • 集成功率 MOSFET
  • 中断状态指示输出
  • 电源正常和充电状态指示输出
  • 欠压/过压保护
  • 热回馈优化充电速率
  • 28引脚 WQFN-28 封装
  • 符合 RoHS 规范，不含卤素
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