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RT8532A是高效率的白光 LED 驱动器，设计用于驱动作为 LCD 屏光源的 LED 阵列。集成了功率开关的电流模式 Boost 转换器可驱动6串并联连接的 LED 串，每串可有多达10只 LED 连接在一起。每个内置电流源支持最大 ±2% 的电流误差，确保每串 LED 都有优异的亮度一致性。为了提供足够的操作余量给每个电流源， Boost 控制器对反馈端子中的电压最低者进行监控并调节至最优化之输出电压以获取最好之效率。</br> RT8532A 可在 2.5V~24V 之宽阔的输入电压范围内工作并输出 5mA~50mA 可调之电流，内部 200mΩ、 43V 功率开关以电流模式控制方式提供逐周期过流保护，还集成了 PWM 和模拟调光功能以取得精确的 LED 电流控制。PWM 调光信号的频率范围在 100Hz~20kHz 之间，调光时不会在 LED 中出现冲击电流。</br>RT8532A 的封装式 WQFN-20L 3x3。
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<li class="mv5">输入电压范围：2.5V~24V</li><li class="mv5">输出电压最大值：43V</li><li class="mv5">各通道电流调节范围：5mA~50mA，误差不超过2%</li><li class="mv5">通道电流调节精度：±3%</li><li class="mv5">调光控制<Br>►直接PWM调光：信号频率可达20kHz，最短导通时间500ns<Br>►PWM转模拟/PWM调光：信号频率可达20kHz，最高9位分辨率</li><li class="mv5">内建软启动</li><li class="mv5">关机模式LED连接断开</li><li class="mv5">保护特性<Br>►LED串开路保护<Br>►电流限制保护<Br>►过热保护</li><li class="mv5">20引脚WQFN封装</li><li class="mv5">符合RoHS规范，不含卤素</li>
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