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buttonDatasheet
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buttonContactUs
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i18n(button-item.contact-us.button-label)
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Product Spec Banner
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basicInfoSection
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RT8576A 是 4 通道 LED 驅動器，每個通道具備 120mA 的 驅動能力。它採用電流模式的 Boost 轉換器進行升壓，該轉換器的工作頻率可用 RT 引腳在 100kHz-1MHz 間進行調節，輸入電壓範圍在 9V-28V 之間。</br>Boost 轉換器的控制回路自動根據工作電壓最高的 LED 串的需要選擇並調節其輸出電壓，因而容許各 LED 串有不同的工作電壓。當 LED 串存在任何未連接或斷開的故障時，控制回路可自動檢測到並斷開其輸出，因而可以避免過壓狀態的發生。</br>各 LED 串間的電流可用一隻電阻進行設定，串與串間的不一致性在 1.5% 以內，通過在 PWM 引腳輸入 PWM 信號可對各 LED 串的電流進行調節。</br>當有過壓保護、短路或過熱等異常狀態發生時，有狀態信號可被發送給系統，系統可使 RT8576A 進入關機狀態。
RT8576A 電路圖
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fixed-width
id
basicInfoImageSection
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technicalDocumentationSection
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false
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F5F6F8
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productDetailSection
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parameterSection
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packageSizePinsSizeSection
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<div class="spec-list"><ul class="lv1"><li>輸入電壓範圍：9V-28V </li><li>Boost 轉換器工作頻率可調範圍：100kHz-1MHz </li><li>通道電流最大可調值：120mA </li><li>通道電流一致性誤差：1.5% </li><li>外接調光控制 </li><li>Boost 轉換器開關過流保護 </li><li>自動 LED 開路、短路保護 </li><li>輸入欠壓閉鎖保護 </li><li>輸出過壓保護閾值可調 </li><li>過熱關機保護 </li><li>過壓保護、短路、過熱等異常狀態指示 </li><li>符合 ROHS 規範，不含鹵素 </li></ul></div>
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productFeatureSection
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productSectionTab
i18n(tab-item.evb-section.title)
evbSection
evbSectionTab
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orderingDetailSection
orderingDetailSectionTab
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orderingInformationSection
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RT8576A 訂購資訊
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products
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productSection
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orderingDetailSection
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RT8576A
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technicalDocumentationSection
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RT8576A
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designToolSection
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<div class="spec-list"><ul class="lv1"><li>液晶電視機、顯示幕背光 </li><li>LED 驅動器 </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.technical-support.learn-more-text)
i18n(support-card-item.technical-support.url)
technicalSupportCard
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i18n(support-card-item.ordering.description)
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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width
fixed-width
id
supportSection