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RT7739LC系列為強化高效能多重模式脈波寬度調變(PWM)之返馳式轉換控制器, 並加入立錡的智慧型抖頻技術 (SmartJitterTM) 之專利。創新的智慧型抖頻技術,不僅可降低系統進入綠能模式所造成之電磁干擾,亦可消除輸出抖頻紋波。同時,RT7739LC兼具多重模式控制方案,可在連續導通模式 (CCM) 於具谷底切換至非連續導通模式 (DCM) 控制,達到產品效能升級之效益。RT7739LC為用於返馳式轉換器的電流模式脈波寬度調變控制器。RT7739LC更結合完整及可編程的安全保護機制,包含:傳輸延遲補償、輸出過電壓保護、外部過溫度保護、大電容Brown-in/Brown-out保護。讓產品研發設計者得更靈活的設計應用對應的商品,以較少的零件數及較低的成本,開發設計高效節能AC-DC電源產品。本產品的封裝為SOT-23-6。
具專利之智慧型抖頻技術►改善切換式電源產生之電磁干擾►消除輸出抖頻紋波
可在連續導通模式與具有谷底切換的非連續導通模式下操作
超低啟動電流 (<3μA)
精準過載保護
可編程傳輸延遲時間補償
可編程輸出過電壓保護
可編程外部過溫度保護
可編程大電容Brown-in/Brown-out 保護
驅動能力:200mA/-300mA
高雜訊抗擾
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