MAX709MCPA

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PMIC - Supervisors refer to power management integrated circuits (PMIC) specifically designed to implement functions of supervision and monitoring of power supplies, such as the MAX709MCPA. Their main task is to protect the power supply, provide state and system control, indicate and report events, and support the current requirement of the system. Boards and systems using MAX709MCPA device are typically based on categories such as microcontrollers, single board computers, industrial control units, and more.

The MAX709MCPA, a fully integrated chip, merges all the protective functions over a controller, enabling robust power system design. MAX709MCPA is built for applications that demand higher precision, such as those found in industrial, test & measurement and process control systems. It combines active-inrush circuitry with voltage and temperature monitoring functions. It is designed to protect system power supply from damage due to overvoltage and overcurrent. It also monitors temperature and other environment parameters for total system protection.

The working principle of the MAX709MCPA consists of two main sections. The first section comprises the active-inrush circuit, capable of both detecting sudden high inrush current and protecting the power supply from potentially damaging overcurrent. The second section consists of overvoltage protection (OVP), temperature protection (TP) and current-limit protection (CLP). These protection features function independently, ensuring reliable operation and optimal protection.

The overvoltage protection (OVP) of the MAX709MCPA is used to detect and protect the system from excessive voltage levels. It has a range of 6 V to 28 V, with a total hysteresis of 1.5 V. It is adjustable over a wide range of 3 V to 15 V and provides adjustable levels of latency. It features a hold-off time of over 10 ms and provides protection from overvoltage events up to the system’s power input.

The temperature protection (TP) feature of the MAX709MCPA is designed to protect the system from over-temperature events. It has a range of +125°C to -40°C, with an accuracy of ±1°C. It provides hysteresis over a range of 1.5°C to 4.0°C and can be set to adjust the latency over a wide range. The TP feature is ideal for applications that need to monitor their thermal environment from false triggering.

Finally, the current-limit protection (CLP) feature of the MAX709MCPA is designed to detect and protect the system from excessive current levels beyond the specified maximum current limit. It has a range of 0.67 A to 5.1 A, with a total hysteresis of 0.33 A. It is adjustable for protection levels from 0.63 A to 5.1 A and provides adjustable levels of latency with a hold-off time of over 10 ms. The CLP feature is designed to protect system input power from overcurrent.

The MAX709MCPA offers a combination of functions perfect for use in industrial, test & measurement and process control applications. Its active-inrush circuit, two levels of OVP, temperature protection and current-limit protection, all work together to provide system protection and monitoring. Its adjustable protection levels and hysteresis values, combined with its accurate detection and reporting, make it perfect for any application that needs robust power system design.

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