The utility model provides a rear-view mirror steering lamp constant current drive control system, which includes input module, step-down module, BCR320U driving chip and a plurality of LED lamps; voltage input module input after step-down module output LED lights up to the multiple LED lamp is lit, when the input voltage fluctuation, BCR320U driver still can output constant current flows through the current changes makes the LED lamp is small. The utility model adds an BCR320U chip and a step-down circuit in the steering lamp circuit of the rearview mirror, so that the brightness of the rear-view mirror steering lamp is more stable.
【技术实现步骤摘要】
【技术保护点】
后视镜转向灯恒流驱动控制系统,其特征在于:包括输入模块、降压模块、BCR320U驱动芯片以及多个LED灯;输入模块输入的电压经过降压模块输出至多个LED灯使得多个LED灯被点亮,当输入电压波动时,BCR320U驱动芯片仍能输出恒定电流使得流经LED灯的电流变化较小。
【技术特征摘要】
【专利技术属性】
技术研发人员:盛道学,王正斌,袁光辉,高社科,刘玲,
申请(专利权)人:宁波市富来电子科技有限公司,
类型:实用新型
国别省市:
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