DW8520包括PWM dimming輸入,這種輸入可以接受外部控制的信號,比例為0~100%和達到幾千赫茲的頻率.可使外部電感和濾波電高、體積減少,效率提高,可通過外部電阻和電感進行設置,工作頻率可根據用戶要求而改變.在EN端加PWM信號,可調節LED燈的亮度.通過調節外置的電阻,能控制高亮度LED燈的驅動電流,使LED燈亮度達到預期恒定亮度,流過高亮度LED燈的電流可從幾毫安到1安培變化.
特點:
Features
- Topology : Switch mode controller (Buck)
- Application Input Voltage : 9V ~ 450V
- Efficiency : Up to 90%
- Current Control : Linear & PWM dimming
- Quiescent Current : Typical 0.5mA
- Switching Frequency : Constant frequency
or constant off-time operation
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樸先生
公司:DONGWOON ANATECH CO., LTD.
網站:www.dwanatech.com
電話:0755-83682571轉809
油箱: piaozanzhu@163.com
手機:15889774044
Q Q :290611903
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