MAX6419UK31+T Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Push-Pull, Totem Pole
Reset:	Active High
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	3.075V, Adj
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	MAX6419

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Introduction:The MAX6419UK31+T is an advanced supervisor device that provides robust power-on reset, power-up monitoring and system protection functions. It is ideal for use in applications such as servers, storage, networking and communications products. This application note describes the MAX6419UK31+T\'s application fields, working principle, and explains the features and their application scenarios.Application Fields:The MAX6419UK31+T can be used in a variety of applications that require system reset, power up/down sequencing, power-on reset, fault monitoring, and system protection functions. The most common application fields include servers, storage systems, network switches, routers and other communication equipment. The MAX6419UK31+T integrates multiple monitoring and control functions, including a 10-second watchdog timer, programmable reset timing, three GPIO pin interrupts, and bus monitor functions. It also includes an input voltage monitor with programmable up/down thresholds. All these features make it suitable for use in a wide range of applications.In server and storage applications, the MAX6419UK31+T can also be used to monitor the system power supply’s voltage and current, checking if the power supply is within safe margins. If the power supply parameters deviate from its normal operation conditions, the MAX6419UK31+T will generate a system reset and inform the processor of the Fault Status.In network and communication systems, the MAX6419UK31+T can be used for power-up sequencing. By controlling the logic levels on the GPIO pins, the MAX6419UK31+T can be used to power up the various components in the system, such as the processor, the subsystems or the ASICs, in a sequence. This ensures that the system can be powered on in a safe and reliable manner.Working Principle:The MAX6419UK31+T operates by monitoring the voltage and current on a voltage rail or current loop. The MAX6419UK31+T can be configured to generate a reset signal or an interrupt to the processor if the input voltage deviates outside the programmed fault thresholds. It can also be used to implement a watchdog timer which will reset the system if a pulse is not received within the programmed time.The MAX6419UK31+T is also capable of detecting input voltage spikes. If an input voltage spike is detected, the MAX6419UK31+T will generate an interrupt to the processor to indicate the occurrence of the fault. This interrupt can be used for system diagnostics and fault isolation.In addition, the MAX6419UK31+T can be used to monitor the current flowing in a current loop. It uses a current sense resistor between the supply voltage and ground to achieve this. The MAX6419UK31+T can monitor an output current between 10mA and 10A, and can generate an interrupt if the current exceeds the programmed thresholds.Finally, the MAX6419UK31+T can be used to implement the power-up sequencing in a system. It can be used to generate interrupts which can be used to power up the various components of the system in a predetermined sequence. This ensures that the components are powered up in a safe and reliable manner.Conclusion:The MAX6419UK31+T is an advanced power supervisor IC which provides a variety of system monitoring and protection functions, ideal for applications such as servers, storage systems, communication and network systems. It integrates multiple monitoring functions such as a 10-second watchdog timer and programmable reset timing, and can be used for power-up sequencing in a system. In addition, the MAX6419UK31+T offers a wide variety of features for system fault detection and diagnostics, making it ideal for applications where reliable operation is a must.

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