DW8520包括PWM dimming输入,这种输入可以接受外部控制的信号,比例为0~100%和达到几千赫兹的频率.可使外部电感和滤波电高、体积减少,效率提高,可通过外部电阻和电感进行设置,工作频率可根据用户要求而改变.在EN端加PWM信号,可调节LED灯的亮度.通过调节外置的电阻,能控制高亮度LED灯的驱动电流,使LED灯亮度达到预期恒定亮度,流过高亮度LED灯的电流可从几毫安到1安培变化.
特点:
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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朴先生
公司:DONGWOON ANATECH CO., LTD.
网站:www.dwanatech.com
电话:0755-83682571转809
油箱: piaozanzhu@163.com
手机:15889774044
Q Q :290611903
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