MN13822DP Datasheet/PDFThe MN13822DP is a voltage supervisors used mainly in embedded applications and is highly reliable with respect to accuracy, stability and operating temperature. It is made up of a temperature-stable reference voltage source, a power MOSFET and specialised circuits to generate one or more voltage comparators.
The reference voltage of the MN13822DP is 2.5V, but with a wide operating range of 2.0V to 5.25V. This makes the voltage supervisor ideal for monitoring power supplies that are otherwise too low or have a steep drop. With an accuracy of 0.5%, the internal reference voltage maintains itself at a consistent temperature.
Application Field
The MN13822DP voltage supervisor can be used in a variety of embedded applications. It is ideal for microcontroller-based systems, where it can be used to monitor power supply voltages during start-up or power down. It can also be used to monitor incoming voltage transients, ensuring the stability of the power supply in spite of voltage drops or spikes. The voltage supervisor can detect and protect against the following conditions: overvoltage, undervoltage, brownout, power loss and voltage drift.
The MN13822DP voltage supervisor can also be used in automotive and industrial applications. In these cases, the voltage supervisor can be used to detect over- and under-voltages caused by transient conditions and protect against potential damage to the system due to sudden voltage changes. It is also suitable for data communications systems, where it can detect voltage drops in power supplies and ensure the stability of data communication.
Working Principle
The working principle of the MN13822DP voltage supervisor is based on its low power state, the reset mode. This is when the voltage supervisor is powered at only 0.2V less than the reference voltage. In this state, the MOSFET that is connected to the voltage supervisor is in its off-position, meaning that the output of the voltage supervisor is in a low voltage state.
When the input voltage rises to the reference voltage, which is 2.5V, the MOSFET is forced into its on-position, which generates an output voltage at 1.5V. This indicates that the voltage from the power supply has reached the desired level and the MOSFET then forces the output voltage to remain at 1.5V until the input voltage drops below the reference voltage, which forces the MOSFET back into its off-position and indicates that the voltage has dropped below the desired level.
In addition to protecting systems from dangerously over-and-under-voltages, the MN13822DP voltage supervisor also has a detection circuitry that can detect fluctuations in the voltage and reset the system accordingly. This helps prevent any possible damage caused by unexpected voltage drops.
The MN13822DP voltage supervisor is a reliable device that can be used in a variety of embedded and industrial applications. Its ability to detect power fluctuations makes it ideal for protecting systems against potentially damaging voltage drops and surges.