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RT9387A 是采用大电流电荷泵设计的白光 LED驱动器,适用于数码相机闪光灯应用,可以 700mA 的恒定电流驱动 LED 获得高质量的光源。它以 x1/x1.5/x2 等不同的电荷泵工作模式工作,可获得很高的效率和极低的压差。它内建了闪光定时溢出功能以确保高功率闪光驱动的安全,定时器的溢出时间可通过外部电容进行调节。此外,它还具有过热保护、过压保护功能,有软启动功能可避免在启动和模式转换时出现冲击电流,其封装为 WQFN-16L 2x3。
脉冲调光控制
一个 700mA 闪光 LED 通道
用户可编程的闪光和手电筒模式电流
Tx 掩蔽功能
用户可调安全定时器实现闪光 LED 保护
自动的 x1/x1.5/x2 电荷泵模式转换
启动/模式转换器冲击电流防止功能
热调节
过热保护
关机电流消耗低于 0.3μA
小型16引脚 WQFN 封装
符合 RoHS 规范,不含卤素
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