TPS3831G33DQNT

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The TPS3831G33DQNT is a supervisor device used in personal computers and workstations. It is part of Pulse-width modulation (PWM) controllers and is classified as a PMIC - Supervisors device. In particular, the TPS3831G33DQNT is a low-power, ultra-low-latency supervisor device with an integrated voltage reference. The device monitors system power supply voltages to detect fault conditions and provides a reset signal to ensure system reliability and availability.

The TPS3831G33DQNT has pinpoint accuracy, advanced fault signals, programmable reset thresholds, advanced fault signals and an active-low reset output. It also has an integrated low-battery feed-forward that allows reset thresholds to be adjusted in the presence of the supply voltage. The device also includes two LVRT (Low Voltage Reset Thresholds), one for VDD18 and one for VDDIO, allowing for fine-grained control of the two systems. For this reason, the TPS3831G33DQNT is an ideal choice when a system requires low voltage and circuit protection.

The TPS3831G33DQNT’s typical application are in personal computers, workstations, gaming consoles, notebook computers and other embedded systems. It is available in the 14-lead SOICW package and supports operating temperatures of –40°C to +85°C.

The TPS3831G33DQNT’s working principle involves the detection of undervoltage or overvoltage fault conditions in one or two system power supply rails. Once a fault condition is detected, the device asserts a reset signal on its RESET output, which is shared with other supervisor devices in the system. The reset signal remains asserted until the fault condition is cleared. This ensures system reliability and availability by resetting the system before it has a chance to enter an unknown or potentially damaging state.

The device monitors preset servo voltages and raises a reset signal if either voltage rises above or drops below its pre-defined threshold for a certain period of time. The device can also be used to monitor temperature, current or clock signals. The threshold of the reset signal can be adjusted with the use of a jumper or external logic. The RESET output can also be combined with external logic to provide an additional level of system protection.

The TPS3831G33DQNT offers a low quiescent current of 2 μA, a lockout time of fewer than 70 μs and a reset time of less than 200 μs. The device has been designed with a fast turn-on time and low power consumption, as well as a margin of approximately 6%. This ensures system stability during low voltage conditions or brownouts. It also provides users with better system protection against overvoltage or undervoltage faults. The device also has wide input voltage range (2.4 V to 5.5 V) and wide reset threshold (2.4 V to 5.5 V).

The TPS3831G33DQNT is an ideal device for use in personal computers and workstations, where it can provide reliable system protection against low voltage, overvoltage and power surges. Its low power consumption and fast response time allow it to provide a robust system safety net and ensure system reliability and availability.

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