ADM802MARNZ

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Power supply supervisors, otherwise known as Polyphase Monitors or Integrated Circuit Monitors, play a critical role in preventing system malfunctions and failures. They ensure that power is supplied reliably and with the necessary voltage, current, and circuit protection features. ADM802MARNZ is a microcontroller supervisor device designed to monitor power supply systems. This article will discuss the application fields and working principle of the ADM802MARNZ.

The ADM802MARNZ is suitable for microprocessor and system voltage monitoring, such as PC motherboards, notebook computers, Disk arrays and network systems. It is also suitable for industrial control, automotive, telecom, and military applications. The ADM802MARNZ’s power supply voltage can range from 1.8V to 5.6V. With a maximum quiescent current of 4.2uA, the ADM802MARNZ can maintain a maximum supply current of 4mA. It is ideal for energy-efficient applications that require low power consumption.

The ADM802MARNZ contains several key features for effective system monitoring. These features include a programmable reset threshold, programmable delay time, open-drain RESET output, power-on reset, watchdog timer and overvoltage protection. The ADM802MARNZ also contains a special function, POR Bypass, which allows the user to bypass the power-on reset and monitor the system voltage directly.

The ADM802MARNZ’s reset threshold is adjustable and has two functions: reset and Interrupt. The reset function will generate a reset output once the system voltage falls below the preset value. The Interrupt function can generate an interrupt output before the reset threshold is reached. TheInterrupt output can be used to detect low voltages before a reset is triggered.

The ADM802MARNZ has a programmable delay time to delay the reset output if the system voltage is above the reset threshold. This delay time can also be used to filter noise or spikes from the system voltage. The ADM802MARNZ’s watchdog timer can reset the system if the system is not responding. The RESET output can be either active-high or active-low. The open-drain configuration of the RESET output will avoid a conflict with other systems.

The ADM802MARNZ contains an overvoltage protection circuit that will turn off the system if the system voltage exceeds a certain level. This will protect the system from being damaged by an overvoltage. The power-on reset circuit of the ADM802MARNZ will reset the system when the power is first turned on.

The ADM802MARNZ has a single SO-8L package and is constructed with an advanced CMOS process. This ensures low power consumption and high reliability. The ADM802MARNZ is RoHS compliant and is compliant with UL60950-1, UL60950-22, and EN60950-1 safety standards. The operating temperature range is from -40°C to 85°C.

In conclusion, the ADM802MARNZ is a power supply supervisor designed for microprocessor and system voltage monitoring. It offers several key features for effective system monitoring such as adjustable reset threshold, programmable delay time, open-drain RESET output, power-on reset, watchdog timer and overvoltage protection. The ADM802MARNZ is RoHS compliant and complies with UL60950-1, UL60950-22 and EN60950-1 safety standards. It is suitable for applications such as PC motherboards, notebook computers, Disk arrays, network systems, industrial control, automotive, telecom and military applications.

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