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Product Spec Banner
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RT8576A 是 4 通道 LED 驱动器，每个通道具备 120mA 的 驱动能力。它采用电流模式的 Boost 转换器进行升压，该转换器的工作频率可用 RT 引脚在 100kHz-1MHz 间进行调节，输入电压范围在 9V-28V 之间。</br>Boost 转换器的控制回路自动根据工作电压最高的 LED 串的需要选择并调节其输出电压，因而容许各 LED 串有不同的工作电压。当 LED 串存在任何未连接或断开的故障时，控制回路可自动检测到并断开其输出，因而可以避免过压状态的发生。</br>各 LED 串间的电流可用一只电阻进行设定，串与串间的不一致性在 1.5% 以内，通过在 PWM 引脚输入 PWM 信号可对各 LED 串的电流进行调节。</br>当有过压保护、短路或过热等异常状态发生时，有状态信号可被发送给系统，系统可使 RT8576A 进入关机状态。
RT8576A 电路图
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id
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<div class="spec-list"><ul class="lv1"><li>输入电压范围：9V-28V </li><li>Boost 转换器工作频率可调范围：100kHz-1MHz </li><li>通道电流最大可调值：120mA </li><li>通道电流一致性误差：1.5% </li><li>外接调光控制 </li><li>Boost 转换器开关过流保护 </li><li>自动 LED 开路、短路保护 </li><li>输入欠压闭锁保护 </li><li>输出过压保护阈值可调 </li><li>过热关机保护 </li><li>过压保护、短路、过热等异常状态指示 </li><li>符合 ROHS 规范，不含卤素 </li></ul></div>
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RT8576A 订购信息
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RT8576A
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RT8576A
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designToolSection
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<div class="spec-list"><ul class="lv1"><li>液晶电视机、显示幕背光 </li><li>LED 驱动器 </li><li>通用恒流源 </li></ul></div>
applicationContent
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keywordList
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applicationSection
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supportCards
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i18n(support-card-item.ordering.learn-more-text)
i18n(support-card-item.ordering.url)
orderingSupportCard
i18n(support-card-item.sales.title)
i18n(support-card-item.sales.description)
i18n(support-card-item.sales.learn-more-text)
i18n(support-card-item.sales.url)
salesSupportCard
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