CAT1021WI-28-GT3

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PMIC - Supervisors are an important part of power management integrated circuits. They provide protection functions such as reset, watchdog, overvoltage, and overcurrent. The CAT1021WI-28-GT3 is a highly integrated PMIC – supervisor device intended for automotive systems. It contains two independent voltage monitoring channels that each provide programmable reset, watchdog and overvoltage functions.

Features of CAT1021WI-28-GT3

The CAT1021WI-28-GT3 has several features that make it suit the purpose of automotive applications. First, it has two independent voltage monitoring circuits, allowing it to monitor two different input voltages. Second, the reset, watchdog and overvoltage protection functions are programmable. Third, it utilizes a robust over-temperature protection system to ensure system safety. Finally, it is designed to quickly reset after a fault condition is detected.

Applications

The CAT1021WI-28-GT3 has a wide range of applications, such as automotive control systems, computer system power management and power supply sequencing. It can be used in automotive control systems to detect input voltage levels such as battery voltage, motor speed, and engine temperature. In addition, the device can be used to provide overvoltage and overcurrent protection to other components in the system. It can also be used to provide system reset and watchdog functions. Lastly, the device can be used for power supply sequencing for multi-voltage applications.

Working Principle

The CAT1021WI-28-GT3 is designed to monitor two input voltages. Each channel has a separate comparator and threshold circuit. The comparator will compare the input voltage against the programmable threshold. When the input voltage is higher than the threshold, the comparator will pull the reset output to ground, which will force the system to reset. The threshold can be programmed through a serial interface. In addition, the device also has an overcurrent protection feature. When the device detects that the current is higher than the programmable threshold, it will trip and force the system to reset.

Conclusion

The CAT1021WI-28-GT3 is a highly integrated PMIC – supervisor designed for automotive applications. It contains two independent voltage monitoring channels that each provide programmable reset, watchdog and overvoltage functions. It is suitable for automotive control systems, computer system power management and power supply sequencing applications. The device utilizes a robust over-temperature protection system to ensure system safety. In addition, it quickly resets after a fault condition is detected.

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