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RT8011/A为高效率的同步降压型 DC/DC 转换器，输入电压范围从2.6V至5.5V，可调的输出电压范围0.8V至5V，输出电流可达2A。内建的同步低导通阻的功率开关，增进了整体效率并减少了需要外加萧特基二极体的必要性。切换频率可由外部电阻进行设计或由外部时序讯号进行同步操作。借由近100%责任周期的操作提供了低压差转换的应用可有效延长掌上型装置的电池使用寿命。RT8011/A的电流模式架构与外部的补偿机制可因应大范围的输出电容与负载变化的暂态回应进行优化的补偿。RT8011/A强制操作在连续的PWM模式，大幅降低电压涟波值与RF干扰所造成的杂讯。借由近100%责任周期的操作提供了低压差转换的应用并有效延长电池的使用寿命。
RT8011/RT8011A 电路图
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<div class="spec-list"><ul class="lv1"><li>效率高达 95% </li><li>低R<sub>DS(ON)</sub> 的内部开关 : 110mΩ </li><li>可控制操作频率范围: 300kHz至4MHz </li><li>不需外接萧特基二极体 </li><li>0.8V的参考电压允许低电压输出 </li><li>强制操作于PWM连续导通模式 </li><li>近100%的责任周期操作允许输出低压降转换 </li><li>可同步操作切换频率(仅RT8011支援此功能) </li><li>输出电压电源良好信号监控 (仅RT8011支援此功能) </li><li>符合RoHS规范与100%的引脚无铅特性 </li></ul></div>
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RT8011/RT8011A 订购信息
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<div class="spec-list"><ul class="lv1"><li>Portable Instruments </li><li>Battery-Powered Equipment </li><li>Notebook Computers </li><li>Distributed Power Systems </li><li>IP Phones </li><li>Digital Cameras </li></ul></div>
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