TPS3898PDRYR

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Power Management Integrated Circuit (PMIC) supervisors are designed to monitor, protect and manage a circuit’s power supply when running or not. The TPS3898PDRYR is one of the many PMIC supervisors available in the market. The purpose of this paper is to explain the application field and working principle of the TPS3898PDRYR.

The TPS3898PDRYR is a low-power reset supervisor with a low on-resistance MOSFET. It has an input voltage range of 2.03V to 5.25V and a maximum standby current of 1 µA. It is designed to keep power supplies in a safe condition by providing a reset signal when any voltage falls below the regulated threshold value. The watchdog timer provides an additional layer of protection against sudden supply-price drops or overvoltage events. It has an active-low reset output, ensuring a quick and reliable recovery from power-related faults.

In terms of application fields, the TPS3898PDRYR is suitable for a multitude of applications including digital circuits, power supply sequencing, power-on reset (POR) systems, and system management. It is also beneficial for medical, industrial, and communications devices. In relation to the medical field, the fault protection offered by the TPS3898PDRYR can keep medical devices from malfunctioning due to voltage fluctuations. For industrial devices, the watchdog timer offered can detect and prevent sudden supply-price drops, thereby protecting sensitive equipment from unexpected power surges.

The TPS3898PDRYR has a working principle that is easy to understand. It consists of an adjustable voltage threshold and a comparator that is used to monitor the input voltage. When the input voltage falls below the regulated threshold voltage, the reset signal is asserted, causing the supply voltage to reset. This prevents any power faults from occurring and ensures that the power supply is stabilized and kept in safe condition. The watchdog timer monitors the input voltage. If the input voltage drops to a preset value, the reset signal is asserted, thereby preventing damage to the system by sudden power fluctuations.

In conclusion, the TPS3898PDRYR is a suitable PMIC supervisor for a wide range of applications and has a straightforward working principle. It provides a level of protection to digital circuits, power supply sequencing and other systems that can be affected by sudden power fluctuations or overvoltage events. Therefore, it is an ideal choice for medical and industrial devices.

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