S-80839CNNB-B8YT2U

Series:	S-808xxC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	3.9V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-82A, SOT-343
Supplier Device Package:	SC-82AB

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Introduction to S-80839CNNB-B8YT2U PMIC - Supervisors

Power management integrated circuits (PMICs) are a type of integrated circuit (IC) designed to handle the power-processing needs of a system. A supervisor IC, often referred to as a power management IC (PMIC), is one type of PMIC. Supervisors are specialized ICs that monitor the power supply, track power-on events, and provide system reset and protection features. The S-80839CNNB-B8YT2U is a supervisor IC from Nuvoton Technology Corporation of America.

Application Field

The S-80839CNNB-B8YT2U supervisor IC is designed for a range of applications, including consumer electronics, telecoms, industrial, medical, and automotive applications. It provides complete supervision of the power supply and is an ideal solution for applications requiring reliable system startup and reset. The S-80839CNNB-B8YT2U can be used as part of a power management system, providing monitoring, shutdown and fail-safe reset of the processor core.

Features and Specifications

The S-80839CNNB-B8YT2U is a 16-pin supervisor IC designed with several advanced features. It offers adjustable watchdog and reset time-out period, manual reset control, push-button reset and manual supervisor selection. It also provides three voltage-qualified inputs, power-on reset and reset delay, power supply monitoring, power-fail comparator and reset timeout. The device supports a wide operating temperature range of -40°C to 125°C and features I2C, SMBus and SPI interfaces. This IC has low power consumption, with a maximum operating current of 40 µA. It also has a wide voltage operating range from 1.8V to 5.5V, and a minimum voltage of 1.2V for Supervisory Reset (SRES).

Working Principle

The S-80839CNNB-B8YT2U supervisor IC provides complete system supervision, monitoring, and protection from start-up to shut-down. The IC continuously monitors multiple power rails, safely controlling power-on reset, reset timeout, power supply voltage level and comparators. When a power-on reset (POR) is initiated, the internal circuits of the IC assert reset and disable all other functions to ensure the system is correctly initialized. This ensures the system will behave correctly by resetting itself in the event of any power failure. When the power supply voltage reaches the minimum regulation level, the IC will reset the system after a selected timeout period.If any of the power supply voltages drops below the selected voltage level, the S-80839CNNB-B8YT2U performs an immediate reset. This prevents catastrophic system crashes due to overvoltage, undervoltage and over-current faults. As well as resetting the system if any of the power supply rails drops below a certain level, the IC will raise a reset signal for external circuitry.

Conclusion

The S-80839CNNB-B8YT2U PMIC - Supervisors is a highly reliable IC designed to provide comprehensive power management and system reset features. It features adjustable watchdog and reset time-outs, manual reset control, and power-supply monitoring. It is capable of resetting the system in the event of any power outage, excessive or low voltage, or over-current fault. It is ideal for use in applications that require reliable startup and reset, such as consumer electronics, telecoms, industrial, medical, and automotive applications.

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