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求推荐一款恒流LED驱动芯片,支持PWM调光

Other Parts Discussed in Thread: TPS62140, LM3410

输入要求:10V以下的均可(只要满足10V以内,任意范围均可),输出在1~3V。输入电流没有要求,LED的输出电流在1A以内。

只用驱动单个LED,用于对系统的标定。

所以需要:

PWM信号脉宽仅为500ns,周期为10us时,能实现电流的稳定输出。

芯片精度高,温度稳定性好。在不同温度下能输出恒定的电流。