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RT9490 是一款完整的电源管理解决方案，集成了 5A 升降压开关式电池充电器（Buck-Boost Switching Charger）及系统电源路径管理（System Power Path Management）功能，适用于 1 串至 2 串锂离子（Li-Ion）及锂聚合物（Li-Polymer）电池应用。 其低阻抗电源路径可优化开关式电源运行效率，不仅能够缩短电池充电时间，还有助于在放电期间延长电池续航能力。此外，RT9490 内置 I²C 串行接口，可让用户灵活配置各种充电参数与系统设置，使其成为适用于多种应用的高灵活性解决方案。 建议结温范围为 -40°C 至 130°C，环境温度范围为 -40°C 至 85°C。
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<div class="spec-list"><ul class="lv1"><li>High Efficiency, 750kHz/1MHz/1.5MHz Programmable Frequencies, Synchronous Switch-Mode Buck-Boost Charger - 96.7% Charge Efficiency at 2A with 9V Input and 8V Battery - Support 3.6V to 24V Input Voltage Range - Average Input Current Regulation (AICR) - Minimum Input Voltage Regulation (MIVR) </li><li>Support USB On-The-Go (OTG) - 93.8% OTG Efficiency at 2A with 8.4V Battery and 5V Output - Output Voltage with 10mV Resolution to Support USB-PD - BAT Current Limit Regulation (BCLR) </li><li>Support Dual Input Selection </li><li>Support BC1.2, Host Mode and FRS/Seamless </li><li>Support 11-Channel, 16-bit ADC </li><li>Low Battery Quiescent Current </li><li>High Accuracy for Charger CV and ICHG </li><li>Protection - Over-Temperature Protection (OTP) - Junction Thermal Regulation (JTR) - Input Protection (VAC OVP/VBUS OVP/OCP) - Battery Overvoltage Protection (VBAT OVP) - System Voltage Protection (VSYS OVP/UVP) - System Over-Load Protection (VSYS OLP) - Cycle-by-Cycle Overcurrent Protection (OCP) - OTG Low Battery Protection (OTG LBP) - OTG Voltage Protection (OTG OVP/UVP) </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Smart Phone/Tablet/Chrome Book </li><li>Drone </li><li>Portable Device and Accessory </li></ul></div>
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