关键词: LED drivers, LED dimming, pulse-width modulation, PWM, dual comparators
Abstract: This LED-driver circuit produces a 500Hz PWM signal with 2% nonlinearity and duty cycle adjustable from 0 to 100%, using a 0V-to-5V DC control signal.
![](http://uphotos.eepw.com.cn/soothmusic/pics/589d6bd9a3f0bfb8a82a412d3fcdc309.jpg)
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