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R7731A 是一款高性能、低成本、低启动电流的电流模式 PWM 控制器。它具有三重丛发模式 (Burst Triple Mode)，以支持绿能模式省电操作。R7731A 整合了软启动功能、欠压锁定（UVLO）、前缘遮蔽（LEB）、过热保护（OTP）和内部斜率补偿。它提供用户一个优异的，更高效率、较低外部组件数、较低成本的解决方案的 AC / DC 电源应用。为保护外部功率 MOSFET 不受电源过电压的损坏，将R7731A输出驱动器限定在12V。此外，R7731A 尚具备多项保护功能，如超载保护（OLP）和过压保护（OVP），能省去外部保护电路，并提供可靠的操作。 R7731A 是采用 SOT-23-6 和 DIP-8 封装。
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<li class="mv5"> 极低的启动电流 (<30μA)</li><li class="mv5"> 10/14V欠压锁定 (UVLO)</li><li class="mv5"> 软启动功能</li><li class="mv5"> 电流模式控制</li><li class="mv5"> 可抖动的切换频率</li><li class="mv5"> 内部前缘遮没</li><li class="mv5"> 内建斜率补偿</li><li class="mv5"> 支持绿能模式的三重丛发模式 (Burst Triple Mode) PWM</li><li class="mv5"> 逐周期电流限制</li><li class="mv5"> 反馈开路保护</li><li class="mv5"> 过压保护</li><li class="mv5"> 过热保护</li><li class="mv5"> 超载保护</li><li class="mv5"> 抑制电磁干扰 (EMI) 的软启动</li><li class="mv5"> 可驱动±200mA</li><li class="mv5"> 高噪声抗扰性</li><li class="mv5"> 光耦合器短路保护</li><li class="mv5"> 符合RoHS标准及不含卤素</li>
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<li class="mv5"> 变压器和电池充电器</li><li class="mv5"> ATX 待机电源</li><li class="mv5"> 机顶盒 (STB)</li><li class="mv5"> DVD and CD(R)</li><li class="mv5"> 电视/显示器待机电源</li><li class="mv5"> 计算机周边</li>
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