APX803-29SAG-7

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APX803-29SAG-7 is a supervisor from the Pulse Width Modulated Integrated Circuit (PMIC) family. This type of integrated circuit is designed for managing the power supply for microprocessor-based systems, as well as for other types of power-related applications. PMICs are designed to be more efficient and longer-lasting than traditional ICs, and are often used in advanced electronic designs, such as smartphones and tablets. PMICs are also preferred for applications where low power consumption, high reliability, and small form factor are important design goals. In short, APX803-29SAG-7 is a power management IC suitable for advanced and demanding power applications.

The APX803-29SAG-7 is a multi-channel supervisor device, which means that it can monitor multiple power rails or voltage supply signals and send a warning signal if any of the signals go out of specification. It has two overvoltage and two undervoltage monitoring channels, each of which can be independently set. The voltage monitor channel can detect voltages from +1.5V to +5.5V, and the over-current monitoring channel can detect currents from 0.5A to 4A. The APX803-29SAG-7 also offers an open drain reset output which can be used to indicate a warning and reset the system.

The APX803-29SAG-7 has an adjustable reset threshold voltage which can be set from 3.2V to 4.6V by using a voltage divider, and an adjustable reset timeout which can be programmed from 10ms to 10s. The IC also features a power-on reset and a brown-out reset, which can be used to reset the system when the voltage drops too low or suffers a sudden power loss. The APX803-29SAG-7 also offers a low power consumption of only 4.8µA in sleep mode. This makes it an ideal choice for battery-powered applications, where higher power consumption can be an issue.

In terms of the working principle, the APX803-29SAG-7 monitors all the power supply signals in the system, and if any of the signals go out of spec it will send a warning signal to an external controller, such as an MCU, to take action. The overvoltage and undervoltage thresholds are adjustable, as are the reset threshold voltage and reset timeout. The open drain reset output pin can be used to indicate a warning to the external controller and to reset the system, while the power-on and brown-out reset provide additional layers of protection in case of a power-related issue. In addition, the low power consumption of the IC makes it a great choice for battery-powered applications.

In conclusion, the APX803-29SAG-7 is a multi-channel supervisor device from the PMIC family, ideal for managing power supply signals in microprocessor-based systems. It has two overvoltage and two undervoltage monitoring channels, an adjustable reset threshold voltage and timeout, as well as power-on and brown-out reset outputs. Furthermore, it is highly efficient due to its low power consumption, making it suitable for battery-powered applications.

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