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RT8572 是每个通道输出能力达 60mA 的8通道 LED 驱动器。它是一个电流模式 Boost 转换器，100kHZ~1MHz 可调的开关切换频率可通过 RT 引脚进行调节，输入电压范围 9V~28V。输出电压 PWM 调节回路选择拥有最高 LED 串电压的 LED 引脚并将其调整至 0.6V ，借此容许各个 LED 串之间的电压不一致性存在。RT8572 自动检测并断开 LED 未连接或断裂的 LED 通道，避免出现 V<sub>OUT</sub> 的过压状况。一致性误差在 1.5% 以内的 LED 通道电流可以通过一只电阻进行设定，具有很高对比度的纯数字式 PWM 调光可以通过在 PWM 引脚施加 PWM 信号予以实现。当异常状况（开路/短路/过热）发生时，一个状态信号将被传递到系统部分让 IC 进入关机状态。RT8572 的封装是 SOP-24 。
/content/dam/richtek-eds/resources/product-specifications/rt85/rt8572/images/circuit/82920sdqwb.GIF
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<li class="mv5">宽输入电压范围：9V~28V</li><li class="mv5">可调 Boost 控制器开关切换工作频率：100kHZ~1MHz</li><li class="mv5">可程序设计通道电流</li><li class="mv5">通道电流一致性误差：±1.5%</li><li class="mv5">外部调光控制</li><li class="mv5">Boost 部分 MOSFET 过流保护</li><li class="mv5">自动 LED 开路/短路保护，避免输出过压</li><li class="mv5">VCC 欠压保护</li><li class="mv5">可调过压保护</li><li class="mv5">欠压保护</li><li class="mv5">热关机保护</li><li class="mv5">开路/短路/过热状态异常指示信号</li><li class="mv5">符合 RoHS 规范，不含卤素</li>
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<li class="mv5">LCD TV, Monitor Display Backlight </li><li class="mv5">LED Driver Application </li><li class="mv5">General Purpose Constant Current Source</li>
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