APX823-44W5G-7 Integrated Circuits (ICs)

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PMICs, or power management integrated circuits, are a type of integrated circuit that is used to control and manage power in a variety of electronic systems. Supervisors are one type of PMIC that are used to provide system initialization and protection, which involves monitoring input signals, output voltage levels, and system reset signals. The APX823-44W5G-7 is an example of a supervisor IC that is designed specifically for applications that require a low-power, low-voltage reset signal with long reset pulse duration. In this article, we will look at the application field and working principle of the APX823-44W5G-7 supervisor IC.

Application Field

The APX823-44W5G-7 is a supervisor IC that is well suited for a variety of low-voltage, low-power applications. It can be used in battery-operated or other power-sensitive systems that require reliable initialization and protection. The IC has an extremely low operating current and a very long reset pulse duration, making it ideal for systems that require long time-delay reset pulses. The wide operating voltage range of 2.2V to 5.5V also makes it suitable for systems that use a variety of power sources.

The IC is designed specifically for applications in which an output with a low power-on reset (LPOR) or brown-out reset (BOR) is required. The IC can recognize both LPOR and BOR conditions and generate a reset signal when necessary. It is particularly well-suited for use in microcontroller-based systems, as it is capable of recognizing very short reset pulses generated by the microcontroller. The IC is also well-suited for use in systems involving communications protocols, as it is capable of recognizing low voltage supply states and automatically generating reset pulses accordingly.

Working Principle

The APX823-44W5G-7 is a supervisor IC that operates by monitoring input signals, output voltage levels, and system reset signals. The IC is designed to operate over a wide temperature range and offers a low operating current. The operating voltage range of 2.2V to 5.5V makes it suitable for a variety of power sources. The IC monitors the supply voltage and generates a reset signal when the supply voltage goes below a certain threshold.

The IC contains an on-chip voltage detector that is reset by a low voltage or reset input. When the supply voltage goes below the reset threshold, the voltage detector triggers the reset output. The reset pulse is extended by the external capacitor, allowing for a longer reset time. Additionally, the reset voltage is adjustable, allowing the user to customize the reset voltage level. The extended reset pulse and adjustable reset voltage makes the IC well-suited for use in microcontroller-based systems and communication protocols.

The on-chip voltage detector is capable of monitoring both LPOR and BOR conditions and of generating a reset pulse when either one is detected. The IC is also capable of recognizing very short reset pulses generated by a microcontroller and of generating a reset pulse accordingly. The voltage detector can also be triggered manually, allowing the user to externally reset the system.

Conclusion

The APX823-44W5G-7 supervisor IC is a high-performance, low-power PMIC that is well suited for a variety of applications. The wide operating voltage range and long reset pulse duration make it an ideal choice for microcontroller-based systems and communication protocols. The IC can detect both LPOR and BOR conditions and generate a reset pulse accordingly. Additionally, the IC can be triggered manually, allowing the user to externally reset the system. The low operating current and wide temperature range make the IC well-suited for use in battery-operated or power-sensitive systems.

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