APX803L-29C3-7

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APX803L-29C3-7 Application Field and Working Principle

PMIC - Supervisors are a field of Power Management ICs that are used for monitoring and supervising power supply levels. The APX803L-29C3-7 is one such IC, and it is specifically designed for system reset, low-voltage and low-power applications. The following outlines the application field and working principle of the APX803L-29C3-7 supervisor.

Application Field

The APX803L-29C3-7 is designed for use in portable electronics, such as personal digital assistants, mobile phones, and digital still cameras. It can also be used in any system that is powered by a DC power supply, as long as the supply voltage is between 1.0V and 5.5V. Additionally, the APX803L-29C3-7 has an operating temperature range from -40 degrees to 85 degrees Celsius.

The APX803L-29C3-7 is a very versatile IC, as it has the ability to detect undervoltage conditions, trip current levels and reset times, detect low power conditions, and provide a number of system reset outputs. Additionally, the APX803L-29C3-7 is optimized for use with a variety of different types of power supplies, including Li-ion, alkaline, or rechargeable batteries. It also provides the ability to program multiple voltages, selectable power-on reset, life cycle controller, and auto frequency switching, among other features.

Working Principle

The APX803L-29C3-7 is based on a programmable current limiter, voltage detector, and power monitor. This allows the supervisor to monitor the system supply voltage and initiate a reset when it detects an undervoltage or overcurrent condition. The APX803L-29C3-7 also features programmable trip current, reset timeout and external reset delay. These features allow for system-specific preset conditions for reset and power-on settings. Additionally, the APX803L-29C3-7 has a life cycle controller, allowing devices to be placed into a low-power sleep mode while maintaining system integrity.

The APX803L-29C3-7 also has a power-on reset (POR) output, which is used to activate the reset circuit periodically, or during a power transition event. This ensures that the system remains in a safe state during power-up, power-down and power-off operations. Additionally, the APX803L-29C3-7 is also capable of providing multiple reset outputs, which can be used to reset any number of devices within a system.

Finally, the APX803L-29C3-7 also features a watchdog timer, which is used to monitor the system for unexpected lockups or glitches. If the system does lock up, the APX803L-29C3-7 can reset it automatically, protecting the system from any destructive effects of the malfunction.

Conclusion

The APX803L-29C3-7 is a highly versatile, programmable supervisor IC, designed for use with a variety of power supplies and in a range of different systems. Its ability to monitor supply voltage and other conditions, along with its life cycle controller, multiple reset outputs and watchdog timer, make it an ideal choice for portable electronics and other DC power systems.

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