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Product Spec Banner
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RT4531是用于背光应用的双通道电流源、高效率异步升压转换器。由于RT4531内置1.5A/36V功率MOSFET和两个高电流匹配能力汲取电流，所以RT4531可驱动多达10s2p白光LED。RT4531允许极低的电压净空控制，从而有效地提高LED串的效率。</br>RT4531支持PWM调光及单线数字调光接口，它可以实现10位的亮度代码编程。</br>RT4531提供完整的保护功能，如输入欠压锁定（UVLO），过电流保护（OCP），输出过压保护（OVP）和过温保护（OTP）。</br>RT4531采用WL-CSP-9B 1.35x1.35 (BSC)封装。
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<div class="spec-list"><ul class="lv1"><li>输入电压范围:2.5V~5.5V </li><li>内置软启动,UVLO, OTP, OCP, OVP </li><li>关机电流典型值:<1μA </li><li>1MHz开关频率 </li><li>可驱动最多2串共10颗WLED </li><li>独立PWM调光及单线数字调光控制 </li><li>高达10位调光分辨率 </li><li>LED电流精准度±2% (I<sub>FBx</sub> = 20mA) </li><li>LED电流一致性±2% (I<sub>FBx</sub> = 20mA) </li><li>内置IFB1/IFB2引脚过压保护、短路保护及使用检测 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>智能型手机 </li><li>可携式仪器 </li><li>小型媒体形式背光 </li><li>单节电池供电输入的LCD屏幕 </li></ul></div>
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