APX809S05-23SR-7

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

APX809S05-23SR-7 Application Field and Working Principle

The APX809S05-23SR-7 is a specialized PMIC (power management integrated circuit) designed to provide monitoring and control of multiple power supply rails. It is included in the broad family of Supervisors, featuring core functions such as: reset (including manual override), voltage monitoring and reported status, over- and under-voltage protection, low voltage detect, and ramp-up control. As such, the device can act as the central, fast-responding supervisor of all power components in a circuit, improving the overall efficiency and reliability.

Application Field

Due to its wide selection of features, the APX809S05-23SR-7 can be used in a variety of applications. The monitor and control of voltage rails and the stabilization of power supply circuits are its most common applications, and as such, it is most widely found in smartphones, tablets, and other electronic gadgets. It has also found use in larger and more power-demanding applications, such as automotive, medical, and industrial systems, where a reliable voltage supply is essential for proper performance.

Working Principle

The APX809S05-23SR-7 works by monitoring the voltage at key power inputs, provided by the user. Based on the pre-set values programmed within the device, it is able to detect any deviations from the desired state, and take necessary action. The range of features available allow for quite a wide degree of customization, and the ability to address many needs of power supply systems.

Reset Function

As a supervisor IC, the most fundamental job of the APX809S05-23SR-7 is to provide a reset signal to track sources of abnormality and get the system back running. The reset signal is delivered to the device, either through an external signal or automatically generated upon voltage changes and reports the current status. It has the ability to detect a predetermined voltage window, and will alert the user to the changes with a reset signal.

Voltage Monitoring and Status Reporting

The APX809S05-23SR-7 monitors the voltage levels of the power rails in real-time, with the help of an internal 8-bit ADC. This central monitor and report system ensures that components are not running at inappropriate voltages, which may otherwise lead to system instability, and potential safety hazards. The status can either be reported via an active-low interrupt pin or by increasing the external reset timeout, allowing the system to notify the user promptly.

Under- and Over-Voltage Protection

The APX809S05-23SR-7 also provides protection against under- and over-voltage conditions. The threshold points can be configured by a user, based on the application requirements, ensuring that even environments with higher than expected voltages will not cause the system to fail. If either of the thresholds is exceeded, the reset signal will be delivered and the circuit will be reset.

Low Voltage Detect

The APX809S05-23SR-7 also ensures that the voltage of the power supply rails stay within safe operating limits. Through the LVD (Low Voltage Detect) feature, an active-low signal will be sent out to alert the user if the power source drops below a predetermined threshold. The threshold level can be adjusted to account for different environments, which further improves the safety of the system.

Ramp-Up Control

Ramp-up control is a unique feature of the APX809S05-23SR-7 which allows for more effective control of the system startup process. This feature ensures that the power supply rails rise to the desired operating voltage quickly and smoothly, eliminating the risks of potentially damaging voltage spikes at system start-up. The ramp-up rate is pre-programmed and can be adjusted through the external resistor.

Conclusion

The APX809S05-23SR-7 is an incredibly powerful and versatile PMIC, designed to ensure proper monitoring and control of multiple power supply rails. At its core are an 8-bit ADC and capability to deliver reset signals, enabling it to track abnormalities and report status, provide over- and under-voltage protection, and automatic ramp-up control. Combining all these features, the device can easily take charge as the primary supervisor in any circuit, improving its efficiency and dependability.

The specific data is subject to PDF, and the above content is for reference