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RT4528 是电流模式的 LED 驱动器,可在 4.5V~50V 的电压范围内工作,输出电压可达50V。其工作频率为 500kHz,外部电感和输入/输出电容均可最小化。电流检测电压阈值仅 100mV,对效率影响极低。可用模拟或 PWM 信号进行调光。具有内部软起动功能,可避免冲击电流的出现。具有热关机保护功能,避免因过热可能造成的损害。其封装为 SOP-8(含外露式散热焊盘)。
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