XC6121F720MR-G

Power management integrated circuit (PMIC) is a semiconductor device that integrates multiple power management circuits and often provides power regulation functions such as voltage and current regulation, battery charging, and voltage supervision. Supervisors devices are used in digital circuitry to monitor the power supply voltage and other critical signals. The XC6121F720MR-G is a high-accuracy, low-power supervisor designed to protect systems powered by a single or dual rail supply. It monitors input voltages and triggers a reset signal when the input voltage deviates from normal operating levels, ensuring that the system continues to operate safely and accurately.

Features and Benefits

The XC6121F720MR-G integrates a variety of features that make it the ideal supervisor for embedded systems. Some of the main features and benefits it provides include:

• High-accuracy voltage monitor: The XC6121F720MR-G uses a low-offset comparator and has a single-point accuracy of ± 0.7%. This ensures reliable voltage monitoring when compared to conventional voltage detectors.
• Wide range of supply voltage monitoring: A wide range of supply voltages from 3.2 V to 17.2 V can be accurately monitored.
• Low quiescent current: The supervisor has an ultra-low quiescent current of 40 µA, allowing it to operate reliably in battery-powered devices.
• Low power reset delay: The device features a low power reset delay of 225 µs, making it suitable for use in time-critical applications.
• High-precision trigger point: The trigger point is guaranteed to be within 5% of the threshold voltage.
• High-accuracy input threshold: The input threshold is guaranteed to be within ± 3% of the nominal value.
• Wide operating temperature range: The supervisor can operate reliably in temperatures ranging from -40°C to +125°C.
• High-impedance output: The output of the supervisor is of high impedance, allowing it to be used in a variety of applications.

Applications

The XC6121F720MR-G is widely used in a variety of applications. It is often used in industrial and automotive applications as a low-voltage supervisor. It has also been used in embedded systems to provide voltage detecting and reset functions. Additionally, it has also been used in applications such as power-on reset and brown-out protection.

Working Principle

The XC6121F720MR-G uses a voltage-to-frequency conversion circuit to convert the input voltage into a frequency signal. This frequency signal is then compared to an internally-generated reference frequency, and the output is asserted when the input voltage is outside of the specified threshold. In normal operation, the input voltage is expected to be higher than the specified threshold, and if the input voltage falls below the threshold, the output is asserted and a reset signal is generated. This reset signal can then be used to initiate a system reset.

Conclusion

The XC6121F720MR-G is a low-power, high-accuracy voltage supervisor suitable for a wide range of applications. It is often used in applications that require reliable voltage monitoring and reset functions, and is ideal for use in embedded systems, industrial and automotive systems, and power-on reset and brown-out protection applications. Its wide operating temperature range and low power consumption make it the ideal choice for applications where low-power consumption is paramount.