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RT4805A允许系统利用新电池化学作用，当电池电压低于系统能源IC所需之电压时，可提供显著能源。藉由结合内置功率晶体管，同步整流和低电源电流，该IC采用先进的锂电子电池化学系统作为一个简便的解决方案。</br>RT4805A是一个升压调节器，设计于从单节锂电池提供最小输出电压，即使电池电压低于系统最小值。在升压模式中，输出电压调节是保证2A的最大负载电流。在关机模式下的静态电流小于1μA，从而最大程度地延长电池寿命。调节器在旁路和正常升压模式中顺利转换，该装置可强制进入旁路模式，以减少静态电流。</br>RT4805A支持WL-CSP-16B 1.67x1.67 (BSC)封装。
/content/dam/richtek-eds/resources/product-specifications/rt48/rt4805a/images/circuit/74091pxexq.jpg
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<li class="mv5">4少量外部组件 : 0.47μH电感和0603尺寸输入及输出电容</li><li class="mv5">输入电压范围 : 1.8V~5V</li><li class="mv5">输出电压范围 : 2.85V~4.4V<br>►VSEL = L 3.6V<br>►VSEL = H 3.7V</li><li class="mv5">最大连续负载电流 : 2A@V<SUB>IN</SUB> > 2.65V，升压V<SUB>OUT</SUB>至3.35V</li><li class="mv5">效率高达96%</li><li class="mv5">当V<SUB>IN</SUB> > 目标V<SUB>OUT</SUB>，确实执行旁路操作</li><li class="mv5">内部同步整流</li><li class="mv5">关机时确实断开负载连接</li><li class="mv5">强制旁路模式</li><li class="mv5">V<SUB>SEL</SUB>控制优化目标V<SUB>OUT</SUB></li><li class="mv5">短路保护</li><li class="mv5">I<SUP>2</SUP>C控制接口</li><li class="mv5">超低工作静态电流</li><li class="mv5"> WL-CSP 16B 小封装</li>
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<li class="mv5">Single-Cell Li-Ion, LiFePO4 Smart-Phones or Tablet</li><li class="mv5">2.5G/3G/4G Mini-Module Data Cards</li>
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