MB3793-28DPNF-G-JN-ERE1

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Introduction

PMIC (Power Management Integrated Circuit) Supervisors, such as the MB3793-28DPNF-G-JN-ERE1, are used in a variety of electronic applications including computing, data storage, mobile communications and Internet of Things (IoT) devices. Supervisors are used to monitor power supplies and system voltages and can alert the user of any abnormal status or activity. Monitoring system voltage is particularly important in highly integrated devices where multiple chips are powered by the same power supply. It is also sometimes used in conjunction with over-voltage, overheating and Thermal Runaway Protection.

Application Field

The MB3793-28DPNF-G-JN-ERE1 is designed for applications that require reliable power supply monitoring, such as desktops, laptops, servers and network equipment. It is a high-precision power supervisor that can monitor and manage multiple monitoring points with resolution of 1 mV. It has configurable operating voltage range of 1.5V-4.4V, with +-4% accuracy. It can monitor the supply voltage of up to eight different 3V or 5V power supplies and provide assertions or deassertions to control the power supply on/off. This can help prevent any possible problems that may arise due to an unstable power supply. The MB3793-28DPNF-G-JN-ERE1 also has a built-in precision temperature sensor that allows it to detect ambient temperature changes. This temperature protection feature can help prevent device failure due to heat-related issues.

Working Principle

The MB3793-28DPNF-G-JN-ERE1 is capable of accurately monitoring multiple voltages, both input and output. It uses a five-phase pulse- width modulation (PWM) clock. The PWM clock is triggered by a voltage on the VIN pin. The MCU then monitors the voltage levels on the monitored pins in order to detect any variation of the supply voltage. The MB3793-28DPNF-G-JN-ERE1 is capable of accurate voltage monitoring up to +/-1.0% accuracy. The voltage monitoring also has comparison features that can detect abnormal voltage fluctuations. In addition, the MB3793-28DPNF-G-JN-ERE1 has an over temperature protection (OTP) feature that is capable of monitoring and reporting temperature values up to +125℃.

In the case of an abnormal voltage detection, the MB3793-28DPNF-G-JN-ERE1 will assert a signal to the MCU, causing a system power-down or power-off. This prevents any possible device failure due to a discrepant power supply. Apart from providing OTP, the MB3793-28DPNF-G-JN-ERE1 also monitors supply voltage on a continuous basis to detect any changes in voltage. In the event of a detection of an abnormally low or high voltage, the MB3793-28DPNF-G-JN-ERE1 will alert the user by either combining both low and high voltage alert or differentiating between the two.

Conclusion

The MB3793-28DPNF-G-JN-ERE1 is a high-precision integrated circuit supervisor that is ideal for applications that require reliable power supply monitoring. It has a configurable operating voltage range of 1.5V-4.4V, with accuracy of up to +/-1.0%. It can monitor up to eight different 3V or 5V power supplies and provide either assertions or deassertions to control the power supply on/off. The MB3793-28DPNF-G-JN-ERE1 also has a built-in precision temperature sensor which can help prevent device failure due to heat-related issues. Other features include overvoltage/undervoltage monitoring, over temperature protection and low power consumption.

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