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LED驱动芯片

Other Parts Discussed in Thread: TPS62130A, LM3409

是否有LED横流驱动芯片,12V输入,降压型输出电流3A左右,PWM输入转模拟调光的。用于摄像头补光的不能有频闪。

  • Hi
    如果小于3A可以用TPS62130A之类的芯片来做,电路图见datasheet第25页,PWM通过RC滤波成直流进行模拟调光即可。
    或者用其他专门的LED驱动芯片,例如LM3409之类,只要将PWM通过RC滤波成直流就可以。