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RT6191A 是供 USB-PD 应用使用的 Buck 控制器，可在 4.5V-36V 输入电压范围内使用，输出电压可调范围为 3V-36V。RT6191A 采用峰值电流模式控制架构，可以可程控的定电压和定电流输出支持 USB PD3.0 SPR 模式和 28V USB PD3.1 EPR 模式。它内置电荷泵，可驱动低成本的 N-MOSFET 路径开关。利用其带有的 I<sup>2</sup>C 接口，RT6191A 的许多参数如输出电压、电流、工作频率、缆线压降补偿等均可进行程控。它也集成了完整的保护性功能如输入欠压闭锁保护、过压/欠压保护、逐周期电流限制保护、短路保护和过热保护等。其出货封装形式为 WQFN-40L 5x5。
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<li class="mv5">支持 USB PD3.0 SPR 模式和 28V USB PD3.1 EPR 模式</li><li class="mv5">Buck 控制器特性<br>►输入电压范围：4.5V-36V<br>►输出电压范围：3V-36V<br>►峰值电流模式控制架构<br>►工作频率 250kHz-1MHz 可调<br>►节能模式使能轻载高效率</li><li class="mv5">AnyPower<sup>™</sup> 特性：输出定电压 12.5mV/级、输出定电流 9 位分辨率可调</li><li class="mv5">内建双重过流保护功能</li><li class="mv5">支持旁通模式</li><li class="mv5">I<sup>2</sup>C 兼容接口</li><li class="mv5">软启动时间可调</li><li class="mv5">缆线压降补偿可调</li><li class="mv5">内建 VBUS 快速放电电路</li><li class="mv5">Power Good 指示</li><li class="mv5">具备 UVLO、OVP、UVP、OCP、OTP 和逐周期电流限制保护功能</li><li class="mv5">WQFN-40L 5x5 封装</li>
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<li class="mv5">显示器</li><li class="mv5">USP PD 应用</li><li class="mv5">移动电源</li>
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