XC6121D640ER-G

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Power Management Integrated Circuit (PMIC) is designed to support the power supply needs of modern electronic devices, such as mobile phones, laptop computers and medical devices. A PMIC can provide the supply of power to different parts of the system, helping to manage the power supply and reduce power consumption, while also providing system-level control and monitoring. Today, PMICs are typically divided into different categories, including voltage regulators, battery management ICs, supervisors, and multi-function ICs.

The XC6121D640ER-G is a supervisor IC, one of the most popular types of PMICs. It is specifically designed for system reset and monitoring for a range of applications that require strict and reliable power control. This article will focus on the application field and working principle of the XC6121D640ER-G.

Application Field of XC6121D640ER-G

The XC6121D640ER-G Supervisor IC has a wide range of applications, from industrial to consumer electronic products. It is suitable for a range of operating conditions and temperatures, from -40 to +85°C. It is particularly ideal for applications where low power consumption is a primary requirement, such as medical applications.

The XC6121D640ER-G has a flexible system design that allows custom input and output configurations to meet different requirements. It supports up to 3.3V inputs, and can monitor 0.8V to 3.6V supplies. It also supports dual power supply, where one supply can be dedicated to reset operations, and the other supply can be used for system functions. This design allows for better power consumption control, as the reset operations are handled independently of the system operations.

In addition, the XC6121D640ER-G is designed to detect system faults, such as input under-voltage, over-voltage, power-on reset, and brown-out reset. It features a low current consumption of 4µA typical, and is designed for low-power and low-noise applications.

Working Principle of XC6121D640ER-G

The XC6121D640ER-G Supervisor IC operates by comparing two voltage levels. The first voltage level is supplied by an external reference, while the second is supplied by the monitored supply. When the monitored supply is below the lower threshold, the supervisor activates and resets the system. When the monitored supply is above the upper threshold, the supervisor will output a high signal, indicating the system is stable.

When the monitored supply is between the upper and lower thresholds, the supervisor will enter a non-reset & non-high signal state. This helps protect against resetting the system during a power surge or voltage spike. When the monitored supply is above the upper threshold, the supervisor will output a low signal and remain in this state until the monitored supply drops below the lower threshold.

The XC6121D640ER-G supervisor IC provides a wide range of features and advantages, including a wide operating temperature range, low power consumption, and robust system reset and monitoring capabilities. It is an ideal choice for applications requiring reliable system reset and monitoring.

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