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true
basicInfoTitle
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buttonParametricSearch
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i18n(button-item.parametric-search.button-link)
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true
buttonDatasheet
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i18n(button-item.datasheet.button-label)
i18n(button-item.datasheet.button-link)
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buttonContactUs
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i18n(button-item.contact-us.button-label)
i18n(button-item.contact-us.button-link)
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rt-dark-800
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Product Spec Banner
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RT7249為一款高效率、單晶且具有功率開關的同步降壓型DC/DC轉換器，在4.5V至18V的輸入電源範圍可提供最高為3A的輸出電流。RT7249 採用電流模式架構和外部補償，可優化暫態回應的特性。逐週期的電流限制保護元件免受輸出短路影響；軟啟動功能可在啟動過程中防止了輸入電流過沖。故障保護提供了輸出欠壓保護和過溫保護。PWM頻率可由ROSC腳位調整，功率開關的電流限制可由RLIM腳位調整。低電流消耗(<3μA)之電源關機模式會將輸出關閉，有助於電池供電系統的電源管理。RT7249採用WQFN-16L 4x4封裝。
RT7249 電路圖
width
fixed-width
id
basicInfoImageSection
anchor
productDetailSection
i18n(anchor-tab.product-detail-section.title)
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orderingInformationSectionAnchorTab
technicalDocumentationSection
i18n(anchor-tab.technical-documentation-section.title)
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designToolSection
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designToolSectionAnchorTab
applicationSection
i18n(anchor-tab.application-section.title)
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i18n(anchor-tab.support-section.title)
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i18n(tabs.product-detail.title)
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parameterSection
parameterSectionTab
i18n(tab-item.package-size-pin-size-section.title)
packageSizePinsSizeSection
packageSizePinsSizeSectionTab
i18n(tab-item.product-feature-section.title)
productFeatureSection
productFeatureSectionTab
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buttonSeeProductDifferences
text-with-icon
right
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tertiary
i18n(button-item.see-product-differences.button-label)
i18n(button-item.see-product-differences.button-link)
_self
false
buttonFindOtherCategory
text-with-icon
right
secondary-m
tertiary
i18n(button-item.find-other-category.button-label)
i18n(button-item.find-other-category.button-link)
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F5F6F8
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productDetailSection
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parameterSection
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packageSizePinsSizeSection
productFeature
<div class="spec-list"><ul class="lv1"><li>降壓調節器 <ul class="lv2"> <li></li><li>輸入電壓範圍：4.5V至18V </li><li>3A輸出電流 </li><li>內建N-MOSFET開關元件 </li><li>電流模式控制 </li><li>PWM頻率可調 </li><li>輸出電壓可調：0.8V至15V </li><li>緩啟動時間可調 </li><li>穩定相容於陶瓷輸出電容 </li><li>逐週期電流限制 </li><li>輸入欠壓閉鎖 </li><li>輸出欠壓保護 </li><li>過熱保護 </li></ul> </li><li>功率開關 <ul class="lv2"> <li></li><li>±15% 電流限制精確度 @1.2A </li><li>電流限制可調：75mA至2580mA </li><li>符合USB電流限制要求 </li><li>反向輸入-輸出電壓保護 </li><li>內置軟啟動 </li><li>120mΩ高側MOSFET </li><li>操作範圍：2.5 V至5.5 V </li></ul> </li><li>符合RoHS規範與無鹵特性 </li></ul></div>
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fixed-width
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productFeatureSection
24
24
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i18n(tabs.ordering-information.title)
orderingInformationTabs
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productSection
productSectionTab
i18n(tab-item.evb-section.title)
evbSection
evbSectionTab
i18n(tab-item.ordering-detail-section.title)
orderingDetailSection
orderingDetailSectionTab
24
24
24
24
width
fixed-width
id
orderingInformationSection
productImageSwitcher
RT7249 訂購資訊
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card-list
products
productTable
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fixed-width
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productSection
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evbSection
orderingDetail
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orderingDetailSection
technical-documents
RT7249
technicalDocumentMultipleTable
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fixed-width
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technicalDocumentationSection
design-tools
RT7249
designToolMultipleTable
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fixed-width
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designToolSection
32
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rt-blue-800
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24
24
24
<div class="spec-list"><ul class="lv1"><li>無線AP /路由器 </li><li>機上盒 </li><li>工業和商用低功耗系統 </li><li>LCD顯示器和電視 </li><li>綠能電子/電器 </li><li>高性能DSP的負載點調節 </li><li>USB總線/自供電集線器 </li><li>USB周邊端口 </li><li>ACPI電源分配 </li><li>電池電力設備 </li><li>3G / 3.5G數據卡 </li></ul></div>
applicationContent
35
35
35
35
keywordList
56
56
56
56
width
fixed-width
id
applicationSection
rt-blue-800
i18n(text.support-card-title.text-content)
supportCardTitle
withLine
40
40
40
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supportCards
i18n(support-card-item.technical-support.title)
i18n(support-card-item.technical-support.description)
i18n(support-card-item.technical-support.learn-more-text)
i18n(support-card-item.technical-support.url)
technicalSupportCard
i18n(support-card-item.ordering.title)
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
56
56
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width
fixed-width
id
supportSection