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RT9440 器件是一款高度精准且集成式的 2 至 5 串电池电量计与保护解决方案，具备自主电芯均衡、保护与充电器控制功能。<br />RT9440 集成高度精准的模拟外设，可测量并维持可用容量、电压、电流与温度的精确记录。RT9440 通过 SMBus 接口向系统主机控制器回报电池组参数。<br />建议结温范围为 −40°C 至 125°C，而环境温度范围为 −40°C 至 85°C。
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<li class="mv5"> State of Charge (SOC) Calculated by VoltaicGauge<sup>TM</sup> with Current Sensing (VGCS)<br /> </li><li class="mv5"> Voltage Measurement: ±3mV<br /> </li><li class="mv5"> Current Measurement: ±0.5%<br /> </li><li class="mv5"> Battery Temperature Measurement: ±1°C (T<sub>A</sub> = 0°C to 45°C)<br /> </li><li class="mv5"> Hardware Current Protection: ±1mV <br /> </li><li class="mv5"> Autonomous Cell Balance<br /> </li><li class="mv5"> Configurable Protection Levels and Delay Times for Voltage, Temperature, and Current Protection<br /> </li><li class="mv5"> Support Both Voltage-Base and SOC-Base Cell Balance<br /> </li><li class="mv5"> 1.5V to 3.3V Configurable VOUT Power Supply<br /> </li><li class="mv5"> High-Side N-Channel FET Drivers<br /> </li><li class="mv5"> Auxiliary Overcurrent Protection by High-Side N-Channel FET Drop Voltage<br /> </li><li class="mv5"> Low Power Consumption<br /> - Normal Mode: 240μA<br /> - Sleep Mode Options: 70μA to 125μA<br /> - Deep Sleep Mode: 30μA<br /> - Shutdown Mode: 1.6μA<br /> </li><li class="mv5"> Low Value Sense Resistor: 0.5mΩ to 10mΩ<br /> </li><li class="mv5"> SHA-1/SHA-256/ECC Authentication<br /> </li><li class="mv5"> Hardware Load and Charger Detection<br /> </li><li class="mv5"> Support Intel<sup>®</sup> Dynamic Battery Power Technology (DBPT V2.0)<br /> </li><li class="mv5"> Support Battery Trip Point (BTP)<br /> </li><li class="mv5"> Lifetime Data Log and Black Box Recorder<br /> </li><li class="mv5"> LED Display Driver Pins with Scan Function<br /> </li><li class="mv5"> FUSE Driver<br /> </li><li class="mv5"> Support up to 1MHz SMBus Interface<br /> </li><li class="mv5"> IATA Support<br /> </li><li class="mv5"> 32 Pin VQFN Package with 0.4mm Pitch</li>
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<li class="mv5"> Notebooks<br /> </li><li class="mv5"> Power Tools<br /> </li><li class="mv5"> Drones<br /> </li><li class="mv5"> Tablets<br /> </li><li class="mv5"> UPS/Battery Backup Systems<br /> </li><li class="mv5"> Medical Equipment<br /> </li><li class="mv5"> Handheld Vacuum Cleaners and Vacuum Robots</li>
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