XC6123A643MR-G

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PMIC (Power Management Integrated Circuit) is an integral part of most embedded systems. Its job is to optimize the power flow from the power sources to the various components of the system while providing protective features to ensure system safety. Supervisors are an essential component of PMIC, as they observe and control the power flow in the system. The XC6123A643MR-G is a good example of a supervisor, which can provide accurate monitoring of the system voltages and change the switching of devices, while protecting the system from dangerous levels of voltage.

The XC6123A643MR-G is a supervisor IC support 2.3V ~ 5.5V input power supply, and can precisely monitor the power rails in the system. The built-in voltage comparator with trip point accuracy as low as ±300mV, can provide an effective protection for the system against undervoltage, overvoltage, brownout and other power related issues. Besides monitoring the power rails, the supervisor can also control the on/off switching of system devices using an external P-FET and an enable input.

In terms of applications, the XC6123A643MR-G can be used to provide overvoltage protection for different kinds of portable and wearable devices, such as laptops, phones, and smartwatches, as the supervisor can remain stable and accurate over a wide range of temperatures. In addition, the supervisor can also be used to provide undervoltage monitoring solutions in automotive and industrial applications, such as electric vehicles, power tools and household appliances.

Regarding the working principle, the XC6123A643MR-G is a latching supervisor IC. It contains an enable input, reset output, and an enable pin to control the whole circuit. When the voltage is below the threshold, the supervisor will immediately evaluate the voltage, latch in the down state, and put the reset pin in a low logic. From this state, even if the voltage recovers, the reset pin will remain in the low logic state, until the enable pin is triggered. This helps to prevent damage to the system and keep the system stable.

To summarize, the XC6123A643MR-G is a PMIC supervisor IC that supports a wide input voltage range of 2.3V ~ 5.5V. It can accurately monitor the power rails and protect the system from overvoltage, undervoltage and other power related issues. The supervisor comes with an enable input and reset output, to provide maximum protection and stability in applications like automotive, industrial, portable and wearable devices. The working principle of the supervisor is that it can latch in the down state when the voltage drops below the threshold and will remain in the latching state until the enable pin is triggered.

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