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RT9302 是高性能的恒流 LED 驱动器,可对3只 LED 进行驱动,使它们以相同的电流进行工作。每个 LED 通道的电流可达 20mA,精度可达1%,通道间的匹配误差在 0.7%以内。RT9302 提供16级亮度调节功能,LED 电流可在 1.25mA~20mA 之间进行设定,只需在 EN 端施加脉冲信号即可实现。只要 EN 端的信号被拉低超过 20μs,流过 LED 的电流即可被关断,关断以后的典型漏电流仅有 4μA。RT9302 的封装是 TSOT-23-8,其最大高度为 1mm 。
/content/dam/richtek-eds/resources/product-specifications/rt93/rt9302/images/circuit/52006gxqaw.jpg
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<li class="mv5"> 支持最多3只 WLED</li><li class="mv5"> 每个通道输出电流高达 20mA</li><li class="mv5"> 支持脉冲和 PWM 调光</li><li class="mv5"> 1% LED 电流精度</li><li class="mv5"> 0.7% LED 电流匹配误差</li><li class="mv5"> 16级亮度控制</li><li class="mv5"> 低噪声,无 EMI 之虞</li><li class="mv5"> 停机电流极低,仅 4μA</li><li class="mv5"> 符合 RoHS 规范,完全无铅</li>
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<li class="mv5">Mobile Phone, DSC, MP3 </li><li class="mv5">White LED Backlighting </li><li class="mv5">LCD Display Supply</li>
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