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RT8241D为提供高效率、优越的暂态回应与高直流输出稳定度的降压型PWM 控制器，适用于电池降压供电予笔记型电脑内部具有低压电源需求的CPU核心、I/O与RAM晶片等应用。 RT8241D 支援晶片电压可程式设计功能，可透过GX数位输入编成电压范围0.675V 至0.9V。PWM的固定导通时间架构可允许较广的输入/输出电压比，并可在固定的切换频率下提供100ns "instant-on" 的负载回应特性。RT8241D具备高效率并可不必装设以往传统PWM电流模式所必要的电流感测电组以达到低电路设计成本的优势，并可借由驱动同步整流MOSFET并进入二极体仿效模式以达到轻载状态的高效率表现。其降压转换特性允许装置电池达到最高效率的条件下进行高低压转换。RT8241D 为专用于CPU核心、DRAM或其他需要低于0.675V的应用设计。RT8241D 支持 WQFN-12L 2x2 的封装。
RT8241D 电路图
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<div class="spec-list"><ul class="lv1"><li>符合Intel 的VCCSA 电压回转率(Voltage Slew Rate)标准 </li><li>内建 1% 精度的参考电压 </li><li>2-Bit 的可规划与暂态支援的输出电压 </li><li>100Ns的快速负载回应 </li><li>可借由低端R<sub>DS(ON)</sub>感测的 4700ppm/°C 电流限制设计 </li><li>4.5V 至 26V的电池输入范围 </li><li>内建斜坡电流限制的缓起动控制 </li><li>可驱动大型同步整流FET </li><li>内建自举开关 </li><li>电压过高/过低保护功能 </li><li>过热关机保护 </li><li>电源良好信号指示 </li><li>符合RoHS规范与无卤特性 </li></ul></div>
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RT8241D 订购信息
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RT8241D
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<div class="spec-list"><ul class="lv1"><li>Notebook Computers </li><li>CPU/GPU Core Supply </li><li>Chipset/RAM Supply </li><li>Generic DC/DC Power Regulator </li></ul></div>
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