MAX6714DUB+

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The MAX6714DUB+ is a precision system reset supervisor IC that is part of the family of PMIC - Supervisors. In short, a supervisor IC is an integrated circuit that monitors the power supply system in an electronic device and detects conditions that could cause the device to malfunction or system to reset itself. As such, the MAX6714DUB+ provides several benefits when it comes to ensuring the correct functioning of an electronic device in hostile operational environments. This article will discuss the application field of the MAX6714DUB+ as well as some of its key operating principles.

Application Field of the MAX6714DUB+

The primary application field for the MAX6714DUB+ is monitoring the power supply system in any device or system that requires a high degree of reliability in harsh operating environments. This can include a variety of end applications, such as industrial control systems, automotive systems, aerospace systems, medical devices, military systems, and more. It is also suitable for applications where system resetting is critical, such as in embedded systems that deploy a variety of software updates. Furthermore, the MAX6714DUB+ is capable of operating over a wide temperature range of -40°C to +125°C.

The MAX6714DUB+ is also designed to meet the Advanced Telecommunications Computing Architecture (ATCA) standard for blade servers. Additionally, it offers a maximum integration level that simplifies the design process and the supply rails for its internal circuits are optimized for low-noise operation. This reduces the possibility of spurious system resetting events.

Working Principle

The MAX6714DUB+ comprises a precision resistor-programmable input voltage threshold, a +5V voltage regulator, and a power-on reset (POR) circuit that generates a voltage-controlled reset signal. The input voltage threshold of the device can be set by connecting a precision resistor between the REF pin and the ground pin. This allows the reset threshold to be chosen according to the required operating voltage range of the system. In addition, the POR circuit of the MAX6714DUB+ offers an internal power-on delay of up to 650ms, providing users with flexibility when it comes to managing the sequence of power-up.

When it comes to releasing reset, the MAX6714DUB+ is designed to use an internal 50µA tracking current when releasing the reset signal under power-on conditions. This allows for a reliable release of reset after all supply rails have been established across the system. This feature also has the added benefit of providing robust thermal-to-reset holdover in applications that operate within the extended temperature range of -40°C to +125°C.

The MAX6714DUB+ also features an enable pin that allows a designer to place the device in a high-impedance state, which is useful for keeping the device in an offline mode until it is ready to be enabled.

Conclusion

In conclusion, the MAX6714DUB+ is a part of the PMIC Supervisors family that is well-suited for a wide range of electronic applications, and particularly those operating in harsh environments. It features a precision resistor-programmable input voltage threshold, a +5V voltage regulator, and a power-on reset circuit, among other features. It is designed with a 50µA tracking current for releasing the reset signal, and it has an internal power-on delay of up to 650ms. Lastly, the MAX6714DUB+ also includes an enable pin that can be used to place the device in an offline mode until required.

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