APX803L-27SA-7

Power Monitoring and Control ICs or PMICs are an integral part of many electrical systems, keeping track of system power levels, regulating voltage and current, and ensuring circuit protection. The APX803L-27SA-7 is a specific type of PMIC with a variety of useful functions and applications

Features and Specifications

Despite its small size, the APX803L-27SA-7 packs several useful features and parameters. It is a low-voltage, low-current supervisor, meaning it can be used to monitor the status of power rails in a circuit and alert the system if the voltage drops below a safe level. It also can operate at either 3V or 5V, making it highly compatible with most systems. Additionally, the APX803L-27SA-7 features an adjustable reset threshold, active-high or active-low reset, an open-drain type reset output, a watchdog timer and automatic reset controller, and thermal shutdown protection.

Application Fields

Due to its many features and its small size, the APX803L-27SA-7 is often used in mobile devices and other small-space applications where other, larger supervisors would be impractical. Some examples include portable handheld devices, audio systems, and embedded systems in general. Its adjustable reset threshold, active-high or active-low reset, and open-drain reset output give it a great deal of flexibility in terms of which type of systems it can be used in.

Working Principle

The APX803L-27SA-7 works by constantly monitoring the power rails in a circuit and comparing the voltage against a preset threshold. If the voltage drops below the preset value, the APX803L-27SA-7 will trigger the reset output, either opening or closing the reset line depending on if it is configured as active-high or active-low. This will cause the system to reset, ensuring that it does not continue to operate at an unsafe voltage level. The watchdog timer and automatic reset controller will also cause the system to reset if the system is stuck in an endless loop or hangs up.

Conclusion

The APX803L-27SA-7 is a versatile, low-voltage, low-current supervisor that is often used in mobile devices and other embedded systems. It is capable of monitoring the power rails in a circuit and alerting the system if the voltage drops below a preset threshold. Additionally, it can trigger either an active-high or active-low reset output and also features a watchdog timer and automatic reset controller. With its many features, small size, and great compatibility with most systems, the APX803L-27SA-7 is a highly useful tool for power management.