XC6123C749MR-G

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PMIC - supervisors are integral components in modern electronic circuits, providing a level of resilience and reliability that is increasingly critical in mission-critical applications. The XC6123C749MR-G is a 3 Series supervisor specifically designed to provide a capability to monitor system power-on reset and microcontroller Reset. This article will look at the application fields, benefits, and working principles of this supervisor.

Application Field

The XC6123C749MR-G is a versatile supervisor suitable for a wide range of applications. Its main area of operation is microcontroller resets and power-on reset (POR). It is intended for use as part of an overall power management system in embedded systems such as industrial automation, automotive, home entertainment and energy management. In portable devices such as cell phones and tablets, it is used to detect when the main power source is disconnected and to trigger a system reset.

Benefits

This supervisor unit offers many benefits. It is designed to be the smallest and most cost-effective supervisor in its class, reducing the size and complexity of the overall design and reducing costs. It also provides an improved power-on Reset delay time when compared to similar products, allowing the system to start quicker after a power failure. The combination of the extreme low power consumption makes it the ideal choice for energy-sensitive applications.

It also offers a low supply current and low power consumption, so it is suitable for use in battery-operated applications such as wearables and medical devices. Furthermore, it is designed specifically to be highly reliable and resistant to interference, so it should be considered in automotive, medical and industrial applications.

Working Principle

The XC6123C749MR-G uses a complex sequence of pulses to monitor and maintain the status of a system\'s power-on Reset and microcontroller Reset. Specifically, it reads a combination of the system\'s voltage and current levels and turns on or off a system reset output pin according to the statuses it acquires. The sequence consists of four distinct stages: reset detection stage, reset validation stage, reset sustain stage, and reset enable stage.

At the reset detection stage, the XC6123C749MR-G monitors the system\'s voltage and current and detects when the voltage level drops below a certain threshold, such as when the system is powered off. At the reset validation stage, the supervisor confirms that a reset is required by measuring the voltage level again and comparing it to the threshold. If the voltage level still remains below the threshold, the reset sustain stage is triggered, wherein the supervisor continues to monitor the voltage until it reaches a safe level.

Once the voltage reaches the threshold, the supervisor enters the reset enable stage and activates the reset output. This reset output can then be used to initiate a system reset, which will bring the system into its known state. The XC6123C749MR-G also offers a range of protections, such as overvoltage and overtemperature protection, to ensure reliable operation.

In Summary, the XC6123C749MR-G is a 3 series supervisor designed to provide simple monitoring of the system\'s power-on reset and microcontroller Reset. This supervisor offers low supply current and low power consumption, extreme reliability, and high resistance to interference, making it an ideal choice for embedded systems, portable devices and automotive, medical, and industrial applications.

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