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RT4503/A 是具备驱动10只串联 WLED 的高集成度 LED 驱动器，它包括了一个电流模式 Boost 转换器和 36V/1.2A 的功率开关。RT4503/A 可在 2.5V~5.5V 的输入电压范围内以 550kHz 的工作频率工作，使用一只电阻即可设定 LED 电流，反馈电压为 200mV。调光方面，RT4503A 支持32级脉冲调光法，RT4503 则支持 PWM 调光法，它们都对反馈系统的参考电压进行调节。
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