APX824-31W5G-7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active High/Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	3.08V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-25
Base Part Number:	APX824

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Introduction

APX824-31W5G-7 is a Power Management Integrated Circuit (PMIC) specifically designed as a system supervisor (also known as a supervisor chip) to monitor and control a wide array of system peripherals including CPUs, microcontrollers, analog cores and embedded system controllers. This PMIC-supervisor is capable of controlling and monitoring voltage levels, current levels and various system functions thereby ensuring proper system performance. It is released by the American semiconductor manufacturer, Apex Microtechnology Corporation and is commonly used in embedded systems that require high performance power management and system protection.

Application Fields

The APX824-31W5G-7 is a general-purpose supervisor chip, it can be applied in different application fields such as networking, industrial automation, medical and professional audio equipment, instrumentation and automotive applications. In networking field, this PMIC is used for communication interface, data entry, traffic control and network building. For example, it is used in managing Ethernet, USB and CAN buses, providing protection of all the components connected to the control plane, providing data integrity and monitoring the active links.In industrial automation the APX824-31W5G-7 is used for industrial data acquisition systems, controlling machine vision and motion control applications. It is also useful in controlling the operation of low-voltage digital input/output devices, such as a wide array of sensors, motors, stepper motors, vales and other related devices.The APX824-31W5G-7 is also used in medical, professional audio and instrumentation systems in order to maintain a reliable system operation. It helps to regulate voltage and current levels, monitoring and protecting multiple digital input/output devices such as touchpanels and LED displays. On automotive applications, this PMIC is used for supervising multiphase switching regulators, controlling the power switches and FETs, monitoring and limiting inrush currents, overtemperature protection for ECU and other power systems.

Working Principle

The APX824-31W5G-7 is a supervisor IC, so it is not designed to actively control a system, but instead to monitor and observe its operation. This PMIC consists of an internal supervisor microcontroller, which is used to process and check the system environment as well as to perform a variety of tasks including monitoring, counting and transcribing analog/digital signals. The microcontroller is also in charge of regularly reading the dedicated ratio universal serial bus (RUSB), which is a low-power serial communication protocol for transferring power management data. Additionally, the PMIC features an analog to digital converter (ADC) and a voltage reference, which are used to measure and regulate power input from the power supply. The most important features, however, are the multiplexed versions of the output ports. The APX824-31W5G-7 contains two configurable output ports with multiplexed voltage and current measurements, which allows for easy, simultaneous monitoring of multiple devices. Additionally, it is also possible to configure a “watchdog timer”, an internal timer which is used to continuously monitor the system\'s operation.

Conclusion

The APX824-31W5G-7 is a powerful PMIC supervisor chip that is ideal for embedded system applications that require high performance power management. This PMIC supports multiple system functions, such as monitoring, controlling, operating and regulating a wide array of system peripherals. Due to its multiplexed output ports, it is easy to simultaneously monitor multiple devices, making it a great choice for applications in the fields of networking, industrial automation, medical, professional audio and instrumentation, as well as automotive applications.

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