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RT4731是将一个Boost转换器、两个线性稳压器(分别提供AVDD和VOP输出)及生成正压和负压输出的电荷泵集成于一体的AMOLED偏置电源IC,其负压输出可用SWIRE接口协议以100mV为级差在-0.6V~-2.4V间进行调节。它通过使用可自动进行模式转换的-0.33x/-0.5x分压电荷泵实现转换效率的最大化,具有2.9V~4.8V的输入电压范围,负载能力高达30mA,是单节锂离子电池供电条件下的理想选择。其封装形式为UBGA-21B 1.82x3.23。
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<div class="spec-list"><ul class="lv1"><li>输入电压范围:2.9V~4.8V </li><li>使用单线通讯协议 </li><li>固定4.6V正电压输出 </li><li>2.8V AVDD电压输出 </li><li>负压输出SWIRE可调,范围:-0.6V~-2.4V;级差0.1V </li><li>自动进行模式切换的-0.33x/-0.5x电荷泵 </li><li>内建软启动 </li><li>最大负载能力:30mA </li><li>可程控输出快速放电功能 </li><li>关机时输出端为高阻状态 </li><li>UVLO/OCP/SCP/OTP </li><li>关机电流 < 1μA </li><li>21球UBGA封装 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>便携式产品AMOLED显示屏 </li><li>物联网设备 </li></ul></div>
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