TPS3831G18DQNT

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The TPS3831G18DQNT is a CMOS-based supervisory circuit designed for fault protection and safety, which is dedicated to monitor system activity and reset the system when an undesired condition appears. It provides a reset function, an active low reset and an active high enable, to ensure microcontrollers and processors and other peripheral devices are able to maintain a safe state when they are later exposed to external noise, power supply glitches, or other electrical faults.

The main job of this supervisory circuit is to provide a reset signal to the device whenever it detects an abnormal condition such as a power up, power down or supply voltage drop. When it senses a detected abnormal condition or a fault, the TPS3831G18DQNT will reset the system and cut off the power to the peripheral devices. It will then maintain the reset state until the fault or the condition that caused the fault is cleared from the system. This product also features an active-high enable (EN) pin used for system off control. This pin can be used to disable the internal circuitry when it’s high or enable it when it’s low.

The TPS3831G18DQNT has been designed as a low power CMOS device with an operating voltage range of 1.8V to 5.5V. The maximum supply current is only 10µA.Its built-in power-on reset and supply voltage supervisory circuit can be factory programmed to detect supply voltage below set voltage threshold (VTH) and pull the reset output pin to low level. The reset delay time is adjustable with an external capacitor (CT) connected to the Time Delay Control pin. And two external resistors determine the threshold voltages (VTH). The device also integrates an active-high enable (EN) pin for system off control.

The application fields for the TPS3831G18DQNT are vast and can be found in a vast array of systems, primarily because of its ability to monitor system activity and quickly respond to fault events. It can be used to provide added protection to high-end microcontrollers, power supplies, digital signal processors, and a wide range of embedded systems. It can also be used in consumer electronics, automotive electronics and industrial electronics systems.

In summary, the TPS3831G18DQNT is an effective supervisory circuit that is ideal for fault protection and safety. It is a low power CMOS device with an adjustable reset delay time, programmable voltage threshold, active-high enable pin, and wide operating voltage range. Thanks to its various features, it has a wide range of applications in a variety of systems and provides excellent protection from electrical faults and undesired system events.

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