PMIC - Supervisors

PMIC or Power Management Integrated Circuits supervisors have become an essential component of near every electronic circuit design to ensure a system can operate reliably over a wide range of conditions. The S-80933CNNB-G83T2U Supervisor is a small yet highly reliable device that protects the system from brown-out and overtemperature conditions, while also providing a reset signal in the case of power failures. This article will give an overview of the S-80933CNNB-G83T2U supervisor’s application fields and working principle.

Application Fields of S-80933CNNB-G83T2U Supervisor

Applications of the S-80933CNNB-G83T2U Supervisor include boot-up reset, protection with auto restart, protection circuits in communication, data storage and consumer electronics systems, etc. In a communication system, it can be used to supervise the power line, restarting the system if the supply voltage drops below the minimum operating voltage. In data storage systems, it can protect the memory IC from over-voltage and other external disturbances as well as provide an alarm indication or initiate emergency data transfers in the case of system failure. In consumer electronics systems, it can detect when the power supply is disconnected and will trigger the standby state of the device.

Working Principle of S-80933CNNB-G83T2U Supervisor

The S-80933CNNB-G83T2U Supervisor contains many features to ensure system reliability. It consists of two separate circuits to protect the system from brown-out and overtemperature conditions. The brown-out protection circuit monitors the supply voltage and generates a reset signal if there are any prolonged periods of undervoltage conditions. The overtemperature protection circuit triggers an alarm signal if the temperature exceeds a certain level. The reset signal can be used to initiate a safe shutdown of the system. The on-chip timers can be configured to suit the specific application.

The S-80933CNNB-G83T2U Supervisor has an adjustable reset threshold to enable precise reset control. The reset signal is generated when the voltage drops below the selected threshold for a period of time defined by the on-chip timer. This threshold can be easily adjusted to suit the system’s requirements. The power-on reset signal can also be manually triggered or forced via the reset pin. The S-80933CNNB-G83T2U Supervisor also provides an alarm signal when an overtemperature condition is detected, enabling the system to respond quickly to any changes in operating temperature.

The S-80933CNNB-G83T2U Supervisor also supports power-fail detection. When the power supply fails, the reset signal is immediately generated while the alarm signal indicates the power failure. The reset signal can be used to initiate a safe shutdown of the system while the alarm signal can be used to alert operators and initiate emergency data transfers before power is restored.

Conclusion

The S-80933CNNB-G83T2U supervisors are highly reliable and effective power management ICs for a wide range of applications. They provide protection against brown-out and over-temperature conditions via a reset signal and an alarm signal. The adjustable reset threshold enables precise reset control while the power-fail detection prevents data loss in the event of a power failure. By using the S-80933CNNB-G83T2U supervisor, manufacturers can ensure their designs can operate reliably in extreme conditions.