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Product Spec Banner
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RT9426是自带微处理器的锂离子/锂聚合物电池电量计，可提供单节电池的电量资讯，可安装于电池包内或是系统侧的主机板上，实现对内置式或可更换式电池的管理。</br>RT9426使用VGCS (Voltaic Gauge with Current Sensing) 演算法利用电池电压和电池开路电压之间的差异计算电池荷电状态的增加或减少，并利用电流检测资料对计算结果进行补偿，最终给出准确的电池荷电资讯。</br>VGCS演算法得出的SOC资讯是平滑变化的，不存在时间累积误差和电流检测误差，这与库伦计数法相比是一个优势，后者会因电流测量误差和电池自放电而导致电池荷电资料的偏差。</br>RT9426通过中断告警功能提供完整的电池状态监控，它能在电池过压/欠压、充放电过程中的电池温度过高向主处理器发出报警信号。在电池高倍率充电应用中，它能采用Kelvin连接法消除电压测量中的IR压差效应，优化充电特性，确保充电安全。更多有用的报警功能包括：SOC下限报警、SOC改变、电池存在状态改变。
RT9426 电路图
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<div class="spec-list"><ul class="lv1"><li>支援系统侧电池电量计量 </li><li>单节锂离子/锂聚合物电池的电量计 </li><li>使用VoltaicGauge™ with Current Sensing(VGCS)演算法计算荷电状态 (SOC) </li><li>容量计算没有累积误差 </li><li>提供电池SOC、SOH、FCC、TTE和回圈计数报告 </li><li>电压测量精度：±7.5mV </li><li>电流测量精度：±1% </li><li>电池温度测量精度：±3°C </li><li>对电池电压、电流、温度、SOC和存在状态进行监控、报警 </li><li>支援电池高倍率充电应用 </li><li>低功耗 </li><li>低值检测电阻 (2.5至20mΩ，典型值10mΩ) </li><li>12引脚、0.4mm引脚间距WDFN封装 </li><li>9球、0.4mm间距WL-CSP封装 </li><li>I<sup>2</sup>C控制介面 </li></ul></div>
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RT9426 订购信息
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RT9426
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RT9426
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<div class="spec-list"><ul class="lv1"><li>智能手机 </li><li>平板电脑 </li><li>穿戴式设备 </li><li>数码相机 </li><li>数码摄像机 </li><li>手持和可擕式应用 </li></ul></div>
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