X40431S14-BT1

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	3
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	1.7V, 2.6V, 4.4V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	X40431

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PMIC - Supervisors

PMIC supervisors, also known as Power Management Integrated Circuit Supervisors, are small, integrated circuits designed to keep track of the power supplies delivered to digital circuits. They are frequently installed on computer motherboards and other digital systems and can monitor the power of various components in the system. This ensures that the components always have a sufficient power supply and should the power be disrupted, the supervisor will alert the user and/or shut off the power automatically.X40431S14-BT1 is one such PMIC supervisor from NXP Semiconductors. It is a 2.5V-VCC supervisor for 3.3V and 5V battery-based systems and includes an independent reset flag. This supervisor offers high reliability and precision voltage monitoring for over-voltage protection, supporting an adjustable reset voltage from 2.35V to 2.7V. It also features an active low reset and a push-pull reset_L signal, as well as an active low interrupt flag.The supervisor has an active-low RSTN reset output and can be used in systems without power fail logic. It also contains a watchdog timer with a programmable timeout period, and it can provide a reset with a range of approx. 1.44s to 17.9 minutes with the watchdog timeout option enabled.The supervisor also comes with a range of other features, including an unregulated threshold to detect battery degradation, temperature compensation, and selectable reset speeds. It also contains an event input that can be used to temporarily reset the timeout period of the watchdog timer.The X40431S14-BT1 supervisor is suitable for a variety of applications, including portable and embedded systems, automotive power management, industrial power management, and communication equipment. It is also a cost-effective solution for battery-based systems.The working principle of the X40431S14-BT1 is relatively simple to understand. It monitors the power voltage in order to detect if the system\'s power supply falls below a pre-set threshold. If the voltage drops below such a threshold, the supervisor will then generate a reset signal to protect the system and alert the user. The supervisor also resets the watchdog timer if the system fails to respond to a power interrupt or a user-selected reset input.In addition, the supervisor is designed to protect against over-voltage conditions. It checks the supply voltage at regular intervals and sets an active low reset flag if the voltage is too high. This process is repeated continually until the voltage drops below the threshold, at which point the reset flag is deactivated and normal operation is resumed.Overall, the X40431S14-BT1 is an excellent choice for a variety of power management applications. It offers high reliability, precise voltage monitoring, and a cost-effective solution for battery-based systems. Its simple working principle makes it easy to understand and use in a variety of situations.

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