APX803L40-23SA-7

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PMIC - Supervisors are a type of power management integrated circuit (PMIC) device. They are used to provide power protection and monitoring for a range of power-supplied devices and systems. The APX803L40-23SA-7 is an example of such a supervisor. This article will discuss the application field and working principle of the APX803L40-23SA-7.

Application Field

The APX803L40-23SA-7 is a robust, low power consumption supervisor optimized for a wide range of applications. It is compatible with both 3.3V and 2.5V core voltage supply, making it suitable for embedded systems. Moreover, it has a wide operating temperature range of -40°C to +125°C, allowing it to be used in harsh and extreme environments.

The APX803L40-23SA-7 is highly adaptable and can be used in a range of applications, including automotive, industrial, telecommunications, and medical. It is especially suited for applications where power sequencing and sequencing accuracy is a critical requirement.

Working Principle

The APX803L40-23SA-7 is an integrated supervisor device with two primary functions: reset and watchdog. The reset function monitors the voltage level of the power supply and sends out a reset signal if it drops below a certain threshold. This is designed to protect the system from power outages, sudden power drops and brownouts that may occur due to external factors.

The watchdog timer monitors the operation of the system, issuing a reset signal if the user-defined time limit (typically 100 seconds or longer) is exceeded. The reset signal allows the system to restart, resetting the timer and avoiding hardware damage caused by a system lockup.

The APX803L40-23SA-7 has an external supply voltage range of 1.7V to 5.5V, making it suitable for a wide range of applications. It also features an on-chip clock oscillator, adjustable reset delay time, adjustable watchdog time limit and adjustable reset output time. It also integrates under-voltage lockout protection, an internal voltage reference and additional output drivers, providing an accurate and reliable power protection solution.

Conclusion

The APX803L40-23SA-7 is a highly adaptable and robust supervisor designed for a wide range of applications. It has a wide operating temperature range and is compatible with both 3.3V and 2.5V core voltage supplies. It is capable of monitoring the power supply voltage and issuing a reset signal when the voltage drops below a certain threshold in order to protect the system. It also includes a watchdog timer which issues a reset signal if the user-defined time limit is exceeded. It is an ideal solution for applications where power sequencing and sequencing accuracy is a critical requirement.

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