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RT8078A 是高效率的同步降压型 DC/DC 转换器,可在 2.7V~5.5V 输入电压范围内工作,输出在 0.6V~V<sub>IN</sub> 之间可调的电压,最大可输出 4A 的电流。因为使用了内部同步的低导通电阻功率开关,在得到高效率的同时还无需使用外部肖特基二极管。开关切换的工作频率是恒定的 1MHz,可达100%的占空比使之可以工作在低压差状态,因而扩展了便携式应用中的电池使用时间。使用内部补偿的电流模式控制架构赋予其优化的瞬态响应特性,可在宽阔的负载范围和输出电容下工作。它工作在 PWM 模式下以获得在很宽负载范围内的高转换效率。RT8078A 的封装是 WDFN-10L 3x3 和 SOP-8(含有散热焊盘)。
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<li class="mv5"> 转换效率高达95%</li><li class="mv5"> 恒定工作频率: 1MHz</li><li class="mv5"> 无需使用肖特基二极管</li><li class="mv5"> 0.6V 参考电压,容许低压输出</li><li class="mv5"> PWM工作模式</li><li class="mv5"> 100% 占空比支持低压差运行</li><li class="mv5"> OCP, UVP, OVP, OTP</li><li class="mv5"> 符合 RoHS 规范,不含卤素</li>
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<li class="mv5">Portable Instruments </li><li class="mv5">Battery Powered Equipment </li><li class="mv5">Notebook Computers </li><li class="mv5">Distributed Power Systems </li><li class="mv5">IP Phones </li><li class="mv5">Digital Cameras</li>
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