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Product Spec Banner
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RT8549L 是一款高效率升压转换器，具备 4 通道 LED 驱动器，支援 60V 最大输出电压。它专为采用 LED 作为光源的 LCD 面板应用而设计。升压转换器可产生适当的输出电压，以并联驱动四串 LED，且每串最多支援 18 颗 LED。RT8549L 支援 4.2V 至 24V 的宽输入电压范围，并提供 SMBus 介面以控制 LED 亮度调光模式、工作频率与 LED 电流。内部 150mΩ、60V 功率开关搭配电流模式控制，可提供高效率运作。RT8549L 采用 WDFN-16L 5x5 封装，可实现针对 PCB 空间最佳化的解决方案。
RT8549L 电路图
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<div class="spec-list"><ul class="lv1"><li>Wide Operating Input Voltage : 4.2V to 24V </li><li>Max 60V Output Voltage </li><li>3% LED Current Accuracy </li><li>2% LED Current Matching </li><li>Low Drop Output 120mA/0.4V Current Sink </li><li>SMBus Programs LED Current, Switching Frequency, Dimming Mode </li><li>LED Current : 22.58mA to 180mA </li><li>Switching Frequency : 200kHz to 900kHz </li><li>Dimming Mode : PWM, DC, Mixed-Mode </li><li>Built-in Input UVP, Output OVP, OCP, and Soft-Start </li><li>Support LED Hot-plug, Open/Short Detection </li><li>Low EMI, Low Acoustic Noise </li><li>16-Load WDFN Package </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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RT8549L 订购信息
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RT8549L
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RT8549L
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<div class="spec-list"><ul class="lv1"><li>UMPC and Notebook Computer Backlight </li></ul></div>
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