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The RT9467 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications. It integrates a synchronous PWM controller, power MOSFETs, input current sensing and regulation, high-accuracy voltage regulation, and charge termination. The charge current is regulated through integrated sensing resistors. The RT9467 also features USB On-The-Go (OTG) support. RT9467 integrates D+/D- pin for USB host/charging port detection. <p align="justify">The RT9467 optimizes for charging task by using a control algorithm to vary the charge rate for different modes, including pre-charge mode, fast charge mode (constant voltage and constant current). The key charge parameters are programmable through an I<sup>2</sup>C interface. The RT9467 will resume the charge cycle whenever the battery voltage falls below an internal recharge threshold, and can automatically enter sleep mode if the input power supply is removed. </p><p align="justify">Other features include under-voltage protection, over voltage protection, thermal regulation and reverse leakage protection. </p><p align="justify">The RT9467 is available in a WQFN-24L 4x4 package.</p>
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  • 高效能5A，1.5MHz开关式充电器，带输出电感DFE252012F，TOKO
    ►充电效率在ICHG = 2A时为90.25%
    ►充电效率88.86%，在ICHG = 3A
    ►充电效率在ICHG = 5A时为84.2%
  • 同步1.5MHz / 0.75MHz固定频率PWM控制器，责任周期高达95%
  • BATFET控制的电源路径管理
  • 支持高电压输入 (9V / 12V)
  • 支持高压输入转接器 (Pump Express 1.0 / 2.0)
  • 支持从充电器输出到电池端子的IR补偿功能
  • 优化输入源功能以防止过载
    ►通过I2C进行AICR电流限制设置
    ►电流限制设置的ILIM引脚
    ►平均输入电流限制测量
  • 电池漏电减少的运输模式►唤醒系统，退出运输模式，并通过QON引脚重启系统
  • 自动充电
  • 平均输入电流调节 (AICR)：0.1A至3.25A，50mA步阶
  • 充电电流调节精准度：±7%
  • 充电电压调节精准度：±1% (0至85°C)
  • 整体系统注意事项的保护
    ►降低电流和过温保护的热调节
    ►输入过压保护
    ►输入错误转接器保护
    ►电池过压保护
  • 支持ADC转换
    ►VBUS，VBAT，VSYS，REGN，TS_BAT，IBUS，IBAT，TEMP_JC
  • INT输出，通过I2C与主机通讯 (Watch Dog/轮询功能)
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手机 个人信息设备 平板计算机、行动电源 可携式仪器
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