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DLPA3000 驱动输出问题

Other Parts Discussed in Thread: DLPA3000

TI技术人,

我们用在DLPA3000时,应用在电池产品方案,发现,当DLPA3000在同一个光机条件下,当输入电压降低时,输出的LED_ANODE电压也会降低.比某款光机,在12V输入时,LED_ANODE输出电压4.1V,当输入电压是8.4V时输出是3.8V. LED的电流设定条件下,在不同的工作电压下,输出的LED_ANODE电压和和LED电流都会发生变化,这正常吗?