ET3712a30bncls 是一种高灵敏度和高精度的 n 极探测霍尔效应开关 IC，工作在低电压和低电流消耗。 当这种集成电路检测到 n 极磁感应强度大于工作点时，输出电压会降低，直到 n 极磁感应强度小于释放点时，输出电压才会恢复到高值。 使用这种带磁铁的集成电路，可以检测各种应用中的开启 / 关闭状态。

ET3712a30bncls 由于其低电压运行和低电流消耗，适用于电池供电的便携式设备，如移动电话和便携式 pc TWS耳机等！

● Pole detection: Detection of N pole

● Output logic: Active "L"

● Output form: CMOS output

● Magnetic sensitivity: BOPN = -3.0 mT typ.

● Operating cycle (current consumption): tCYCLE = 50.85 ms (IDD = 2.0 uA) typ.ET3712A30(1).pdf ET3712A30BNCLS.pdf 

● Power supply voltage range: VDD = 1.6 V to 5.5 V

● Operation temperature range: Ta = -40°C to +85°C ● Package: SOT23-3 ● Lead-free (Sn ), halogen-free

Application ● Open/Close detection for flip mobile phones

● Smart cover for smart phones

● Smart cover for portable PCs, tablet PCs

● Digital video cameras and portable game consoles

● Home appliances