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RT8058A为PWM电流模式控制的降压型 DC/DC 转换器，适用于定频操作，在全负载范围低电压输出纹波的应用中。输入电压范围从2.6V至5.5V，可调的输出电压范围0.6V至5V，输出电流可达2A。并操作在恒定频率1.2MHz，可适用于采用价格较低廉、较小尺寸的电容与电感元件进行由单一锂电池供电的应用电路设计中。内建的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管的必要性。RT8058A藉由近100%占空比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。RT8058A支持WDFN-10L 3x3的封装规格。
/content/dam/richtek-eds/resources/product-specifications/rt80/rt8058a/images/circuit/92563qscmc.GIF
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<li class="mv5">0.6V的参考电压允许低电压输出</li><li class="mv5">近100%的占空比操作允许输出低压降转换</li><li class="mv5"> 2A 负载电流</li><li class="mv5"> < 2μA 的停机电流</li><li class="mv5"> 效率高达 95%</li><li class="mv5">不需外接萧特基二极管</li><li class="mv5"> 恒定切换频率1.2MHz</li><li class="mv5"> 低R<sub>DS(ON)</sub> 的内部开关</li><li class="mv5">具内部补偿机制</li><li class="mv5">内建缓启动机制</li><li class="mv5">过热保护</li><li class="mv5">短路保护机制</li><li class="mv5">10-引脚的 WDFN 封装</li><li class="mv5">符合RoHS规范与无卤特性</li>
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<li class="mv5">Portable Instruments </li><li class="mv5">Microprocessors and DSP Core supplies </li><li class="mv5">Cellular Telephones </li><li class="mv5">Wireless and DSL Modems </li><li class="mv5">Digital Cameras </li><li class="mv5">PC Cards</li>
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