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Product Spec Banner
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RT6274是简单易用的3.5A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>RT6274采用改进型固定导通时间ACOT<SUP>®</SUP>控制架构，具有超快瞬态响应速度，外部元件少，在整个输入、输出和负载范围内具有基本恒定的工作频率。轻载条件下，RT6274C自动工作于PSM模式以维持其高转换效率，RT6274D则工作于强制PWM模式以满足应用对输出电压调整特性的需求。<BR>RT6274通过对上、下桥MOSFET电流的检测实现强劲的过流保护，有逐周期电流限制保护避免在输出短路、过流或电感饱和情形下可能出现的危险，其内建的软启动功能可避免在启动期间出现电流冲击，还具有输入欠压锁定保护、输出欠压保护和过热关机保护等功能可确保其在所有工作条件下的安全和平稳运行。<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3.5A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>最高输出电压：0.7657~V </li><li>改进型固定导通时间ACOT<sup>®</sup>控制架构 <ul class="lv2"> <li></li><li>超快瞬态响应速度 </li><li>针对使用低ESR陶瓷输出电容进行了优化 </li></ul> </li><li>参考电压源精度：1% </li><li>可选工作模式<br)►psm节能模式（rt6274c）> <ul class="lv2"> <li></li><li>强制PWM模式（RT6274D）</br)►psm节能模式（rt6274c）> </li></ul> </li><li>固定工作频率：1.2MHz </li><li>使能控制输入，内建1ms软启动时间 </li><li>输出端预偏置启动安全设计 </li><li>输入欠压锁定保护 </li><li>其他保护功能 <ul class="lv2"> <li></li><li>打嗝模式的输出欠压保护 </li><li>上、下桥开关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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