产品简介

　　1881霍尔开关电路适于响应变化斜率陡峭的磁场并在磁通密度较弱的场合使用，它由反向电压保护器、电压调整器，霍尔电压发生器、信号放大器，史密特触发器和集电及开路的输出级组成。
　　产品特点：可靠性高、一致性好、抗环境应力、可和各种逻辑电路直接接口
　　可实现功能：无触点开关、位置检测、速度检测、换向控制、流量检测
　　典型应用领域：直流无刷电机/风机/泵、电动自行车、家用电器、玩具、电动工具
　　根限参数（TA＝25℃）
　　
　　电源电压 Vcc：4.5-24V
　　工作温度范围：-40--85℃
　　
　　输出负载电流IO：25mA
　　贮存温度范围：-55--150℃
　　
　　电特性：（TA＝25℃）
　　参数，符号，测试条件，量值，单位，
　　，典型，
　　电源电压 VCC 4.5-24 V
　　输出低电平电压 VOL Vcc＝4.5V RL＝960ΩB≥BOP mV
　　输出漏电流 IOH Vo＝Vccmax，B≤BRP-1.0 10μA
　　电源电流 ICC VCC＝VCCMAX 输出端开路-6-mA
　　输出上升时间 tr Vcc＝12V，RL＝820Ω，CL＝20pF-0.3 1.5μS
　　输出下降时间 TF-0.3 1.5μS

US1881 General Description

The Melexis US1881 is a Hall-effect latch designed in mixed signal CMOS technology. The device integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an open-drain output driver, all
in a single package.

Thanks to its wide operating voltage range and extended choice of temperature range, it is quite suitable for use in automotive, industrial and consumer applications.

The device is delivered in a Thin Small Outline Transistor (TSOT) for surface mount process and in a Plastic Single In Line (TO-92 flat) for through-hole mount.
Both 3-lead packages are RoHS compliant