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RTQ2537 是大电流（4A）、低噪声（6.8μV<sub>RMS</sub>）、高精度（全程 1%）的低压差线性稳压器，具备以最大 240mV 压差提供 4A 电流输出的能力。其输出电压可用 PCB 引脚连线的方式进行选择（最高电压 3.95V），此法因无需外接电阻而减少了元件数量，它也支持使用外接电阻而获得更高的输出电压。它可在电压低达 1.1V 的单输入环境工作，易于使用。</br>因为具备低噪声、高 PSRR 和大电流输出能力，RTQ2537 是数模转换器、模数转换器和射频应用等对噪声敏感场合的理想电源供应器件。因为输出精度电压高、支持远程测量、可用软启动降低电流冲击，RTQ2537 也是 FPGA、DSP 和 ASIC 等数字电路供电的理想器件。</br>它具有使能控制端和 Power Good 指示功能，为需要时序管理的应用带来方便。通过在其 NR/SS 端增加旁路电容可强化其抑制输出噪声的能力。其性能参数在结温 T<sub>J</sub> = -40°C ~ 125°C 的范围内都能得到保障。它的供货封装形式为 VQFN-20L 3.5x3.5。
/content/dam/richtek-eds/resources/product-specifications/rtq2/rtq2537/images/circuit/35899hovut.GIF
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<li class="mv5"> 输入电压范围：1.1V-6.5V</li><li class="mv5"> 提供两种输出电压设定模式<BR>► 电阻分压器，0.8V-5.5V<BR>► PCB 连接，0.8V-3.95V</li><li class="mv5"> 全程 1% 输出电压精度</li><li class="mv5"> PSRR：40dB@500kHz</li><li class="mv5"> 卓越的噪声抑制能力<BR>► 6.8μV@0.8V 输出<BR>► 10μV@3.3V 输出</li><li class="mv5"> 输入、输出直通压差：240mV@4A（最大值）</li><li class="mv5"> 使能控制</li><li class="mv5"> 可调软启动</li><li class="mv5"> 与 47μF 或更大陶瓷输出电容配合可稳定工作</li><li class="mv5"> Power Good 指示</li><li class="mv5"> 符合 RoHS 规范，不含卤素</li>
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<li class="mv5"> 便携式设备</li><li class="mv5"> SerDes、FPGA、DSP 电源</li><li class="mv5"> RF、VCO、ADC、DAC、LVDS 电源</li>
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