XC6123A431MR-G

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The XC6123A431MR-G (hereafter referred to as XC6123) is a PMIC Supervisor that is designed to better monitor system voltages and currents, monitor the system environment, protect against overvoltage and undervoltage conditions, adjust supply currents and voltages, and provide system-level control of system power states. It is a low-voltage, low-power supervisor for multi-rail applications.

A PMIC Supervisor is a specialized integrated circuit that provides necessary power sequencing, sequencing control, and sequencing oversight during different power-on or power-off conditions. It acts as a supervisor of the overall electrical system. This particular PMIC Supervisor, the XC6123, has the set of features that enable a system to meet power sequencing requirements for a variety of applications.

Application Field

The XC6123 is ideal for low-power portables, controllers, system control and power management applications that require detailed control over the power sequencing and supply voltages. Its features make it suitable for applications such as smart card systems, USB-based peripherals, embedded controllers, system control, and power management.

In terms of voltage requirements, the XC6123 can operate at voltages as low as 1.2V and as high as 5.25V. The device also offers an internal monitor circuit that is able to detect minor fluctuations in voltage and current. This feature ensures that the system will not be jeopardized by sudden supply fluctuations.

Working Principle

The XC6123 works by monitoring four separate voltage/current sources (VDD, VDDA, VDDH, and VCCO) in parallel, and manages the output voltage/current levels across the system. The device can monitor the system environment, protect against overvoltage and undervoltage conditions, adjust supply voltages and currents, and provide system-level control of the system\'s power states.

When power is supplied to the system, the XC6123 first performs a voltage-threshold test on all four channels to determine whether they meet the system\'s voltage requirements. If any channel fails the test, it is disabled and its output is brought to a low-power standby state. The device then continues to monitor the voltage levels of the remaining three channels to ensure that they remain within specified operating parameters.

The XC6123 also provides overvoltage and undervoltage protection. If the voltage levels of any of the three enabled channels exceed the maximum or go below the minimum specified levels, the XC6123 will disable the channel and turn its output voltage to a low-power standby state. The other two channels will continue to receive supply voltage, but the voltage will be restricted to the rated level.

The XC6123 also monitors the overall system environment, continually adjusting supply current and voltages to adjust to changing conditions. This helps ensure that all connected components receive the optimal level of supply voltage and current. The device also contains a power-down-control circuit, which helps protect the system from sudden power-down events.

In addition to its basic power management features, the XC6123 also contains advanced features such as adjustable output slew rates and adjustable trip thresholds. This helps to provide system-level control over the system\'s power states. It also makes it possible to adjust the power-down behavior of the system, ensuring that all connected components are safely and efficiently shut down in the event of a power loss.

The XC6123 also provides interface options for external circuit control. It can be configured to monitor additional supply rails or to provide control over additional external switches or circuits. This helps ensure that the system is able to gracefully handle any power state changes that occur.

Overall, the XC6123 is a powerful and versatile PMIC Supervisor. Its features enable it to provide superior power sequencing, sequencing control, and sequencing oversight capabilities. This in turn helps ensure that all connected components receive the optimal supply voltage and current, and that the system\'s power states can be controlled and managed efficiently and safely.

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