OV/OC保护DC输入

Circuit Protection of DC Input - OV/OC

解决方案：

解决方案：

保护申请：: 对于LCD背部打火机和微处理器功率，将提供DC电压（通常在5VDC至18VDC范围内）。电气威胁包括雷电潮，ESD和过电流条件（短路或过载）。
Solution Description:: As shown at the left, a fuse or PTC can be used for short circuit and overload current conditions. For surge and ESD protection, TVS diode (e.g. P4KE or P4SMA series) can be used.
Companion Solutions:: Note that the magnitude of the surge transient should be understood as this can point to alternative solutions. For example, if more severe surges are expected, then C-III or UltraMOV varistors or higher-rated diodes (e.g. 600W, 1,500W) can be selected. If the only threat is expected to be ESD, then multilayer chip varistors can be selected.
监管问题：: 如果ESD是一个问题，则可以咨询IEC 61000-4-2，以查找有关应使用的测试方法和瞬态波形的信息。
独特的功能：: 不适用。
Application Warnings:: 不适用。