有个小东西在做,一个灯饰,PWM控制,两个RGB灯对应颜色串联,6.8V供电,电阻限流到30mA,目前做法是用DCDC转出6.8V,但是调试发现DCDC调出来的电压有差异,所以想寻求一款合适的LED恒流驱动IC,最好三路或者六路都能单独用PWM控制,单路电流30mA,能用5V或者12V供电。谢谢各位
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Hi
或可以选择LP5520:
http://www.ti.com.cn/cn/lit/ds/symlink/lp5520.pdf