MN1381-L

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The MN1381-L is a system supervisor integrated circuit (IC) designed for power monitoring in complex power distribution systems. It features overvoltage, overcurrent and voltage drop protection. It monitors the system’s voltage and current signals to ensure the system remains stable even when there are sudden changes in the power supply. The MN1381-L is typically used in audio, video, lighting and other electronic devices.

The MN1381-L is an adjustable system supervisor IC with an adjustable reference voltage, adjustable overvoltage circuit, adjustable overcurrent circuit, and adjustable voltage drop circuit. The reference voltage can be adjusted to 0.1V increments between 2.2V and 4.3V. The overvoltage circuit can be adjusted to trip at a voltage between 4.45V and 6.9V, while the overcurrent circuit can be adjusted to trip when the current rises above a certain adjustable threshold. The voltage drop circuit also has an adjustable threshold.

The MN1381-L has a maximum operating voltage of 16V, a maximum operating current of 25mA, and a maximum output voltage of 18V. Its output is a low-impedance signal that can be used to control and/or activate external alarms. The device also includes open-drain and Schmitt trigger outputs that provide noise-free protection.

The MN1381-L has several applications in the field of power management. It can be used to monitor the output voltage of a switching power supply, the current of a power line, the input voltage of DC power sources, and the temperature of a power device. It can also be used to control a power switch, providing a standard and reliable way to turn off power if there is a voltage or current overload. In addition, it can be used to shut down a system if a voltage drop occurs.

The working principle of the MN1381-L is relatively simple. It measures the system’s voltage and current signals to identify any instability or hazardous voltage/current levels. When any of the programmed thresholds are exceeded, the MN1381-L will activate an output signal, which can be used to deactivate a power switch, enable or disable an alarm, or enable a safety shutoff system. The device also includes a reset function that can be used to reset the system without having to manually turn it off and on again, saving time and energy.

The MN1381-L is a versatile system supervisor IC that can be used to monitor and protect a variety of power systems. It provides reliable and accurate power monitoring, protection, and control, allowing users to ensure that their systems remain stable even when there are sudden changes in their power supplies. It is easy to set up and configure due to its adjustable features and reset function, making it an ideal supervisor for a variety of applications.

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