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RT4528 是電流模式的 LED 驅動器,可在 4.5V~50V 的電壓範圍內工作,輸出電壓可達50V。其工作頻率為 500kHz,外部電感和輸入/輸出電容均可最小化。電流檢測電壓閾值僅 100mV,對效率影響極低。可用類比或 PWM 信號進行調光。具有內部軟起動功能,可避免衝擊電流的出現。具有熱關機保護功能,避免因過熱可能造成的損害。其封裝為 SOP-8(含外露式散熱焊盤)。
高壓工作特性,VIN 可高達 50V,VOUT 可高達 50V
內建 3A 功率開關
電流模式 PWM 控制
500kHz 固定開關頻率
可用類比或 PWM 信號進行調光
內置軟啟動避免衝擊電流
欠壓閉鎖保護
熱關機保護
符合 RoHS 規範,不含鹵素
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