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LM3405A问题

Other Parts Discussed in Thread: LM3405A, LM3404, LM3405

用LM3405A做LED驱动,,输入电压是10~18VAC,输出电压为10V/1A,,负载9个1WLED,整灯外铝壳温度是65度左右,,,帮忙看看输出能否维持1A电流不变!另输入为交流或直流,哪种会更好!