TPS3420DDRYT Integrated Circuits (ICs)

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PMICs (power management integrated circuits) are electronic devices that are used to monitor and control the power of electronic systems and microprocessors. As the name suggests, they are integrated circuits that provide multiple functions such as voltage regulator, power switches and supervisors. TPS3420DDRYT is an example of these PMIC supervisors that is mainly used in automotive and industrial applications. This article will discuss the application field and the working principle of this device.

Application Field

TPS3420DDRYT is a PMIC supervisor and it is mainly used for monitoring and controlling the power management of automotive and industrial systems. It is a device that provides a microprocessor with reset protection from a variety of conditions, such as overvoltage, undervoltage, power fluctuations and temperature variations. The device is designed to be integrated into the system in order to provide a more efficient and reliable power management system.

Features

TPS3420DDRYT is a highly integrated device that provides various features such as an adjustable reset threshold, a threshold accuracy of +100mV, an adjustable reset time delay up to 50ms, an active-high reset, an reset disable input, an active-low power-good output and an auto-retract reset function. Additionally, the device is available in a small package, making it suitable for applications where space is limited.

Working Principle

The working principle of the TPS3420DDRYT is fairly simple. When the device is powered, it continuously monitors the input voltage and compares it to the user-programmed threshold voltage. If the voltage falls below the threshold, the device will initiate an active-high reset, which will reset the system. Additionally, the device has a reset disable input pin that can be used to deactivate the reset functionality. This is a useful safety feature that prevents the system from being reset inadvertently.

The device also has an auto-retract reset function, which is triggered when the voltage rises above the threshold once again. This ensures that the device will not remain in a reset state if the voltage should fluctuate movements.

In addition, the device also provides a power-good output, which indicates when the voltage has stabilized and is within the acceptable range. This indication can be used to determine the status of the system\'s power supply and can be used to control other components in the system.

Conclusion

The TPS3420DDRYT is a PMIC supervisor that is mainly used for monitoring and controlling the power management of automotive and industrial systems. It provides features such as an adjustable reset threshold, adjustable reset time delay, reset disable input and an active-low power-good output. Its working principle is fairly simple, as it continuously monitors the input voltage and initiates an active-high reset when the voltage falls below the user-programmed threshold. Additionally, it also has an auto-retract reset function and a power-good output, which provides useful indications of the system\'s power status.

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