The STMC109 is a high side current sense monitor.Using this device eliminates the need to disrupt the ground plane when sensing a load current.It takes a high side voltage developed across a current shunt resistor and translates it into a proportional output current.
A user defined output resistor scales the output current into a ground-referenced voltage.
Thewideinput voltagerangeof 20Vdown to aslow as 2.5V make it suitable for a range of applications. A minimum operating current of just 4μA, combined with its SOT23 package make it a unique solution,suitable for portable battery equipment.

*STMC109是一款高压侧电流检测监测芯片，使用该芯片，不需要再检测负载电流时接地端。它只需要通过在高压侧的采样电阻产生电压差即可将其转换为同比例输出电流电压值。

*用户定义的输出电阻将输出电流换算成参考电压值。

*宽电压输入：从20V降到2.5V，使其适用于各种应用。最小工作电流仅为4μA，结合其SOT23封装，使其成为一种独特的解决方案，适用于便携式电池设备。

*STMC109 电流检测IC

*电源高端电流检测IC

*最高供电电压：20V

*检测精度：1%

*封装：sot-23