APX809S-31SA-7 Integrated Circuits (ICs)

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The APX809S-31SA-7 is a Power Management Integrated Circuit (PMIC) specifically designed to provide system and power supply supervisors in devices that may require a high degree of control and protection. This product is part of the APX series of Supervisors manufactured by Apexian Technologies Incorporated. Specifically, the APX809S-31SA-7 provides extra features to its predecessor models, allowing the user to customize system and power supply supervision characteristics to specific applications.

Overview

The APX809S-31SA-7 is designed around a 32-bit ARM Cortex-M0+ processor and provides an array of digital and analog peripherals, including voltage, current, temperature and time monitoring and control. This PMIC can monitor up to 7 digital inputs, 6 analog inputs and one digital output. It can be powered by a supply voltage range of 2.7 to 5.5V. The APX809S-31SA-7 is a highly integrated supervisor device, with an output voltage of 3.3V, a total current output of 300mA and a supply current of typically 28.1mA.

This PMIC offers a wide range of features, such as process management, over-/undervoltage, over-/undercurrent, and over-/undertemperature protection. It also provides for external triggering and fault reporting through the open-drain active-low RESET pin. When an over-/undervoltage, over-/undercurrent, or over-/undertemperature event occurs, the APX809S-31SA-7 rapidly pushes a reset signal to the RESET pin to allow for the system to properly respond.

The APX809S-31SA-7 also offers internal monitoring of oscillator frequency and overload detection. The overload detection feature monitors and identifies excessive or unsafe current flow, and can be activated by applying a logic high signal on the OLIGN pin. The APX809S-31SA-7 has a built-in comparator which monitors the frequency of the internal oscillator. It can be triggered low if the frequency is too high or too low, signaling an event and resetting the system.

As with all PMICs, the APX809S-31SA-7 is designed to safely and reliably manage system parameters, including power supply and temperature levels for a wide range of applications. It is especially suited for use in applications requiring high accuracy, such as in industrial, medical, and aerospace applications.

Application Areas

The APX809S-31SA-7’s superior regulation combined with its high level of integration makes it a great fit for many applications. It is ideal for embedded systems where precise, low-power and small-footprint solutions are required. The APX809S-31SA-7 also has the ability to regulate temperatures and power supplies for microcontroller-based projects for factory automation, robotics, and machine control.

The embedded features of the APX809S-31SA-7 make it an attractive choice for consumer applications, including mobile phones, digital televisions, automotive electronics, and more. The APX809S-31SA-7 is also a good choice for power-sensitive applications such as medical diagnostic and monitoring equipment, computers, and other electronic devices.

Working Principle

The APX809S-31SA-7 works by performing a number of functions that manage and control the system and power supply parameters. The PMIC contains a series of internal voltage or current comparators to detect any sudden changes in system and power supply voltage or current. When a change outside of the acceptable range occurs, the PMIC signals and reports the event to the RESET pin.

The APX809S-31SA-7 also has the capability to provide overvoltage, undervoltage, overcurrent, undercurrent and overtemperature protection. When any of these actions occur, the APX809S-31SA-7 sends a reset signal on the RESET pin to alert the system of the sudden change. The APX809S-31SA-7 then hold the RESET pin until it returns to its normal state.

The APX809S-31SA-7 also includes features such as frequency monitoring, terminal monitoring, and current overload detection. The frequency monitoring feature monitors the internally generated oscillator frequency and can be activated by applying a logic high signal on the OLIGN pin. It then notifies the user if the oscillator is outside of acceptable range. The terminal monitoring feature monitors and identifies any unexpected changes in voltage or current levels. Finally, the APX809S-31SA-7 has an internal overload detection feature which monitors the current state of the system, and can be enabled by applying a logic high signal on the OLIGN pin.

Conclusion

The APX809S-31SA-7 PMIC is a highly-integrated supervisor device that is designed to manage system and power supply parameters. It provides a wide range of features, including overvoltage, undervoltage, overcurrent, undercurrent and over-temperature protection. It also offers frequency monitoring, terminal monitoring and current overload detection features. The APX809S-31SA-7 is ideal for use in embedded systems, consumer electronics, industrial automation, and medical diagnostic and monitoring equipment.

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