QX9924是一款高效率，穩定可靠的高亮度LED燈恒流驅動控制芯片，內置高精度比較器，固定關斷時間控制電路，恒流驅動電路等，特別適合大功率、多個高亮度LED燈串的恒流驅動。
QX9921/24采用固定關斷時間的峰值電流控制方式，其工作頻率最高可達1MHz，可使外部電感和濾波電容體積減小，效率提高，節省PCB面積。關斷時間可通過外部電容進行調節，工作頻率也可根據用戶要求進行調節。在EN端加PWM信號，可調節LED燈的亮度。
QX9924通過調節外置電流檢測電阻的阻值來設置流過LED燈的電流，支持外加電壓線性調光，流過LED燈的電流可從幾十毫安到2.5安培變化。
QX9924采用ESOP8封裝，散熱片內置接SW腳。
,全新原裝,可當天發貨或門市自取.
其它物料還有：
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