MAX693AEWE+

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Power management integrated circuits (PMIC) are circuits that consolidate the power supply or termination devices of a system in one or multiple integrated circuit (IC). These devices are often referred to by their acronym, PMICs, to describe their purpose. One of the most important functions of a PMIC is to monitor the voltage supply of a system and provide warning alarms when the voltage deviates from the normal range or inadequacies occur. Supervisors fall into PMICs in this regard as they constantly monitor the voltage in the system and can be used to "supervise" the power supply.One of the latest supervisors to come to market is the MAX693AEWE+, a highly advanced supervisor designed for safety critical applications. It is designed to be integrated into small form factor products such as automotives, IoT, industrial and aerospace applications. The MAX693AEWE+ supervisor is designed for ultra-low powerconsumption and has a variety of integrated high-accuracy analog functions. This supervisor provides comprehensive protection for system power by monitoring input power supplies for under/over voltage conditions, automatically resetting the system when anomaly is detected and providing an early warning of impending power problems.The MAX693AEWE+ supervisor is essentially an analog-to-digital converter (ADC) connected to two voltage comparators that constantly monitor the system’s voltage level. When the monitored voltage differs by a set level (threshold), the comparators identify the difference and provide a warning or signal to shut down the system. It monitors two independent voltage outputs and is connected to two independent voltage Rails of the system. This allows the supervisor to check the supply rail voltage and the reference voltage of the system and compare them against the predetermined threshold levels.The MAX693AEWE+ supervisor also includes an integrated automatic reset feature, which will reset the entire system when a power anomaly is detected. This feature can be used to restart the system and to minimize any damage caused by a power fault or power loss. The supervisor’s integrated supervisory circuits also provide a detailed view of the system’s power input and a system shutdown signal to indicate when power failure is imminent.In addition to all of its monitoring and protection capabilities, the MAX693AEWE+ supervisor also provides an integrated watchdog timer. This timer is used to ensure that the system does not stay powered for an extended period of time (defined by the user) when it should be shut down. This ensures that the system maintains its optimum performance without putting unnecessary strain on the power supply rails. The MAX693AEWE+ supervisor also provides a NO_UPDATE signal, which will indicate when one of its voltage monitoring inputs has been damaged. This alert signals the system to immediately shut down to avoid any additional damage to the system. Overall, the MAX693AEWE+ is a highly advanced supervisor designed for safety critical applications. With its integrated voltage monitoring and protection capabilities, trusted watchdog timer, and automatic system resetting feature, the MAX693AEWE+ is an ideal choice for a wide range of applications.

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