Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Watchdog Circuit
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	1.6 s Typical
Voltage - Threshold:	4.1V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-25

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PMIC - Supervisors

The XC6121E641MR-G is a very important type of PMIC (Power Management Integrated Circuit) Supervisor device specifically designed for microcontroller-based systems that need a higher level of safety and protection. The XC6121E641MR-G provides a variety of features and options that are useful in a wide range of applications.The XC6121E641MR-G includes several voltage monitoring and detection elements in the form of a programmable 5-bit undervoltage monitor, an overvoltage monitor, an adjustable reset counter and an active voltage reset timer. The XC6121E641MR-G is capable of monitoring and detecting a wide range of voltages, from 1.8V to 10V, and it also provides a number of protection features such as reverse voltage protection and surge voltage protection. In addition, it also provides a watchdog function for proactive system monitoring and protection against system failure.The XC6121E641MR-G allows for reliable, precision power supply and reset source. The unit uses a high accuracy voltage-to-time converter, which is integrated with a 13-bit counter, an analog comparator and a power management logic block. The voltage-to-time converter is used to translate the voltage signals into a pulse rate (frequncy) signals which it then uses to compare against the programmed parameters.When the input voltage is above or below the set threshold values, the XC6121E641MR-G outputs a reset signal. It can also be used to generate an interrupt to the microcontroller, to alert the user of an abnormal voltage condition. The reset counter is programmable up to 25 reset pulses and can generate a reset to the microcontroller once the counter has been reached. The active voltage reset timer also allows for a fixed time delay to ensure that once the reset has been generated, it will remain active for the predetermined amount of time.The XC6121E641MR-G also has an adjustable reset pulse frequency. This allows the user to increase the pulse frequency when an abnormal voltage is detected and decrease it when the voltage returns to normal. This eliminates the need for constant monitoring and can prevent false triggering of the reset.The XC6121E641MR-G is suitable for a wide range of applications, such as industrial control and automated measurement systems, motor and motor control systems, electronic equipment, and power supply protection. The device can also be used in automotive systems and can provide overhead protection, surge protection, and reverse polarity protection.In conclusion, the XC6121E641MR-G is an important device for protecting a wide range of systems. Its adjustable voltage and time detection elements, along with its power management logic block and other features, make it a highly capable, versatile, and reliable device for providing system protection and outage prevention.

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