APX803L05-39SA-7

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Power Management Integrated Circuit (PMIC), also known as supervisors, are instrumental for power supply control in electronic applications. Supervisors provide simple features such as monitoring of power rails and reset generation, as well as configurable power sequencing, microprocessor reset, as well as many other system management tasks. As a supervisor, the APX803L05-39SA-7 has a plethora of integrated peripherals that help complete the overall power system management.

Application Fields of APX803L05-39SA-7

APX803L05-39SA-7 can be used in a variety of applications. From power management stacks that enable very low power SoC integration to designs with multiple power rails and complex sequencing, APX803L05-39SA-7 offers scalability to meet any design requirement. It is a perfect solution for general-purpose designs where reliability is essential, and can also be used for specialized power applications such as power sequencing for high powered processors, advanced safety features for medical applications, or SOFETs for automotive applications. Additionally, APX803L05-39SA-7 open-drain output combined with low power reset ensure the proper operation of mobile devices as well as Wi-Fi/Bluetooth radios and other communication interfaces. Many manufacturers offer the APX803L05-39SA-7 for industrial applications, including low-power IoT products, wearables, and other space constrained IoT designs.

Working Principle of APX803L05-39SA-7

APX803L05-39SA-7 functions as an adjustable, multi-rail supervisor IC with a wide input voltage range of up to 31V. The integrated flexible power-on/off reset (POR) and timer reset delay signal allow it to operate in a wide variety of applications. By adjusting the delay signal\'s rising threshold and falling thresholds, it can ensure that the power-on and power-off timing are fully optimized for a given design. The APX803L05-39SA-7 also features independent programmable high/low power thresholds to help eliminate inrush current. The APX803L05-39SA-7 also monitors and controls power supply sequencing, ensuring that each power rail receives the correct voltage level at the correct time.

The APX803L05-39SA-7 also monitors system events and conditions and can generate a reset signal when its set conditions are met. It provides active-low monitoring outputs that enable it to monitor external sequence conditions, as well as a GPIO pin voltage detection to monitor any external logic activity or condition that may affect the functional behavior of the system. To ensure proper power delivery, the APX803L05-39SA-7 also provides a common enable signal for all its power supplies, as well as adjustable VDD/VCC/V9 powertrack maintenance. It also provides up to three-channel access control to allow large-current event control such as audio power switching.

In addition to the features mentioned above, the APX803L05-39SA-7 also features a watchdog timer that can be used to detect system hang-ups, an open-drain power-ok (POK) output to indicate the presence of valid power, and a watchdog counter reset (DCR) output. DCR can be used to reset the whole system without the need to use external circuits. The APX803L05-39SA-7 can also be used in conjunction with external sequencing logic, allowing it to turn on/off power rails in a specific sequence as demanded by external logic.

Conclusion

APX803L05-39SA-7 is a powerful PMIC Supervisor IC that can be used in a variety of applications, especially those needing multiple power rails and complex power sequencing. It is designed to provide a reliable system reset and precise timing control, and can also be used with external sequencing logic for multi-rail power management. The APX803L05-39SA-7 includes features like power tracking maintenance and power-ok output to ensure proper system operation, and its variable reset threshold and watchdog timer make it an ideal supervisor for low-power, high-reliability applications.

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