MN13812SC

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PMIC, which stands for Power Management IC, is an integrated circuit that controls and regulates the electric power of a device or system. Supervisors are one of the many different types of PMICs and they are used to detect any abnormality in the system, and respond with a signal to alert or isolate a malfunction. This article will discuss the application field and working principle of one type of supervisor, the MN13812SC.

The MN13812SC is a 3-phase, pulse width modulated (PWM) supervisor with adjustable overvoltage (OV), undervoltage (UV) and overtemperature (OT) protection. It is designed to protect three-phase motors from overvoltage, undervoltage and overtemperature conditions and is particularly well suited for electric fan applications. It is typically used in consumer, automotive, industrial and communications applications. The MN13812SC has a fixed operating temperature range of -40°C to +125°C, making it suitable for harsh operating environments.

The working principle of the MN13812SC is simple. When the voltage or temperature falls outside set thresholds, the supervisor generates a signal to alert or isolate the malfunction. The voltage thresholds can be easily adjusted by changing the external resistors. The supervisor includes an adjustable OV lockout which monitors the average Vcc voltage to detect any overvoltage conditions. If the voltage rises above the selected threshold, the OV lockout function is triggered and the signal is passed on to the external circuit. Similarly, the UV lockout monitors the average Vcc voltage and if it falls below the set threshold, the UV lockout is triggered. Finally, the overtemperature lockout function monitors the temperature of the external component and when it rises above the threshold, the OT lockout will be triggered.

The MN13812SC offers a number of features which make it an ideal supervisor for three-phase motor protection applications. It has an adjustable OV lockout to detect any overvoltage conditions, and an adjustable UV lockout to detect any undervoltage conditions. It also offers an adjustable overtemperature lockout to protect the component from any excessive temperature. The supervisor is also protected against any overcurrent and overtemperature conditions, and is designed to provide continuous protection against undervoltage, overvoltage and overtemperature conditions.

The MN13812SC is a highly reliable and cost-effective supervisor for three-phase motor protection applications. Its adjustable OV, UV and OT lockout functions make it an ideal choice for any application. Its wide operating temperature range, combined with its robust protection features, makes it a great choice for any system that requires reliable protection.

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