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RT6158A 是高效率的单电感 Buck-Boost 转换器，可在输入电压范围为 2.5V-5V 的高于或低于输出电压的条件下工作，负载能力可达 2A。其功率开关最大峰值电流限制值为 4.5A (典型值)，内部反馈电路对 Buck、Boost 运作模式均提供补偿，两种模式之间的切换平滑无缝，具有最优的瞬态响应特性。</br>在低功率应用中，RT6158A 以脉冲频率调制 (PFM) 模式工作以提高效率，此模式可被禁用以强制其在 2MHz 的固定开关频率运行。可用 2.2MHz-2.6MHz 的外部时钟信号强迫它同步运行。其输出电压可用电阻分压器进行设定，设定范围为 2.1V-5.2V。
/content/dam/richtek-eds/resources/product-specifications/rt61/rt6158a/images/circuit/33106axxni.GIF
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<li class="mv5"> 输入电压范围 : 2.5V-5V</li><li class="mv5"> 输出电压可调范围 : 2.1V-5.2V，用外部电阻分压器设定</li><li class="mv5"> V<SUB>IN</SUB> = 3V、V<SUB>OUT</SUB> = 3.5V 时，最大负载能力为 2A</li><li class="mv5"> 效率高达 96%（V<SUB>IN</SUB> = 4.2V、V<SUB>OUT</SUB> = 3.5V、I<SUB>LOAD</SUB> = 0.5A 时）</li><li class="mv5"> 有 OCP、OVP、OTP 和 SCP 保护功能</li><li class="mv5"> 工作频率：2MHz</li><li class="mv5"> 无开关切换电流消耗：5μA</li><li class="mv5"> 可选强制 PWM 和 PFM/PWM 自动切换模式</li><li class="mv5"> 有输出端快速放电功能</li><li class="mv5"> 自动在 Boost 和 Buck 模式间平滑切换</li><li class="mv5"> 25 球 WL-CSP 封装</li>
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<li class="mv5"> 蜂窝电话</li><li class="mv5"> WiFi 模组</li><li class="mv5"> 平板电脑</li><li class="mv5"> 便携式仪器</li>
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