CAT1026YI-30-GT3

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The CAT1026YI-30-GT3 is a programmable supervisor integrated circuit (IC) designed to monitor system voltages and reset a microcontroller when the power supply conditions become critical. Using an on-board watchdog timer and a dual-chamber voltage sensing architecture, this supervisor IC is designed to protect any system from unexpected power supply fluctuations or voltage discrepancies that can arise from real-world supply fluctuations or system fault conditions.

CAT1026YI-30-GT3 Overview

The CAT1026YI-30-GT3 is designed to detect input power supply conditions and reset oncritical conditions. This supervisor IC has several programmable features: voltage thresholds, reset timeout periods, timeout window, and reset deassertion times. It features an on-chip reset pulse droop timer and a dual-chamber voltage sensingarchitecture. All of these features provide efficient protection against power supply fluctuations and discrepancies, as well as real-world system fault conditions.

The CAT1026YI-30-GT3 has a watchdog timer feature. This timer has adjustable timeout periods (window), programmable reset timeout periods, and adjustable timeout periods for both the voltage threshold exceed threshold and the voltage threshold drop threshold. It also has an integrated temperature-compensated reference (TCR) circuit, which can be programmed with a specific reference voltage.

CAT1026YI-30-GT3 Application Fields

The CAT1026YI-30-GT3 supervisor IC is used in a range of applications, including industrial and automotive systems, consumer and residential applications, telecommunications, medical, networking and computing systems and industrial control and building automation systems. It is especially suitable for systems that require voltage-dependent reset functions, such as high reliability and safety systems, DC-DC converters, µController and processor-based systems, low dropout regulators, automotive applications, and any system that requires reliable monitoring and control of the power supply voltage.

CAT1026YI-30-GT3 Working Principle

The CAT1026YI-30-GT3 is based on a dual-chamber voltage sensing architecture, which works in a similar way to a voltage regulator. It has an internal circuit that connects to the input power supply and continuously monitors the incoming voltage. Whenever the watched voltage goes above or below the programmed voltage thresholds, the supervisor IC will immediately trigger a reset pulse.

This supervisor IC can detect input power supply faults before they cause serious problems and can help in protecting the system from unexpected power supply changes. Furthermore, the watchdog timer feature helps in preventing microcontroller lockup and system malfunctioning. It will detect any faulty processor behavior and reset the microcontroller if it fails to respond within the timeout period.

As an additional feature, the CAT1026YI-30-GT3 also includes an on-chip reset droop timer which monitors voltage drops and rises after a system reset. If the voltage does not meet the desired level within the programmed time period, the supervisor IC will reset the system again. The watchdog timer and reset pulse droop timer are essential for ensuring reliable system operation and excellent protection against power supply discrepancies or system fault conditions.

Conclusion

The CAT1026YI-30-GT3 supervisor IC is a convenient, versatile and efficient tool for protecting critical systems from unexpected power supply fluctuations or voltage discrepancies. It features dual-chamber voltage sensing and a watchdog timer, as well as a reset pulse droop timer, enabling it to effectively and efficiently handle most voltage-dependent reset functions. This supervisor IC is suitable for a variety of applications, including industrial and automotive systems, complex computing systems, and any system that requires reliable monitoring and control of the power supply voltage.

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