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Product Spec Banner
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RT6264是简单易用的4A同步Buck转换器，输入电压范围为4.5V~18V，集成有高精度的参考电压源，内含高精度 0.765V 参考电压源和低 R<SUB>DS(ON)</SUB> MOSFET 功率开关，具有极高的转换效率。<BR>RT6264 采用 ACOT<SUP>®</SUP> 改进型固定导通时间控制架构，具有瞬态响应速度快、外围元件少、工作频率在整个输入、输出范围内基本保持恒定等特性。轻载条件下，RT6264A 自动运行于 PSM 模式以维持其高转换效率，RT6264B 则工作于强制 PWM 模式以满足高输出电压调整精度的需求。<BR>RT6264 通过对上下桥通过电流的检测实现强劲的过流保护，逐周期进行的电流限制可避免出现输出端短路、过流和电感饱和等情况可能导致的致命危险，内建的软启动功能可避免出现启动期间的电流冲击，它还具有输入欠压保护、输出欠压保护和过热保护等功能，在各种工作条件下均可安全稳定地运行。<BR>建议结面温度范围为 -40°C 至 125°C.
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<div class="spec-list"><ul class="lv1"><li>负载能力4A的转换器，集成 66mΩ/36mΩ MOSFET功率开关 </li><li>输入电压范围：4.5V~18V </li><li>输出电压可调范围：0.765V~7V </li><li>ACOT<sup>®</sup> 改进型固定导通时间控制架构 <ul class="lv2"> <li></li><li>瞬态响应速度快 </li><li>对输出端使用低 ESR 陶瓷电容进行了优化 </li></ul> </li><li>反馈参考电压精度：±1%（典型值） </li><li>可选工作模式 <ul class="lv2"> <li></li><li>自动 PSM 节能模式（RT6264A） </li><li>强制 PWM 模式（RT6264B） </li></ul> </li><li>固定工作频率：650kHz </li><li>使能控制和内部固定 1ms 软启动 </li><li>输入欠压锁定保护 </li><li>保护功能 <ul class="lv2"> <li></li><li>打嗝模式的输出欠压保护 </li><li>上下桥过流保护和过热保护 </li></ul> </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>机顶盒 </li><li>液晶电视机 </li><li>家用网络设备 </li><li>监控设备 </li><li>通用电压转换器 </li></ul></div>
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