MAX6384XS28D2-T

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PMIC (power management integrated circuit) supervisors are high-voltage ICs that monitor a microprocessor or IC and reset the system when power is unstable or when a part of the system fails. The MAX6384XS28D2-T is a flexible, dual voltage supervisor IC providing programmable initial power-on timer, low voltage monitor and voltage reset. It is suitable for microprocessors and wireless sensor nodes applications, and combined with other microelectronic components provides an easy solution to monitor power supply fault conditions and system failures.

The MAX6384XS28D2-T consists of two voltage monitors, a reset generator, an adjustable reset timer, and an internal oscillator. Its reset output can monitor both system power-on and power-down conditions, such as input voltage variations, system over-temperature, and low battery conditions. It also provides an adjustable power-on reset delay for microprocessor initialization.

Features

The MAX6384XS28D2-T is designed for use in microprocessor-based systems and provides a warning in case of a power supply fault condition. It offers the following benefits:

• Adjustable voltage limit settings for both high and low-voltage rail.
• Programmable input filter and timer delay.
• Wide operating temperature range (–40°C to +85°C).
• Small QFN package size: 8 × 8 (1mm x 1mm).
• Wide VDD range of 2V to 5.5V.
• Low current consumption.

Applications

The MAX6384XS28D2-T is suitable for applications such as microcontroller-based systems, wireless sensor nodes, remote monitoring systems, and medical devices. It is well suited for use in applications that require an adjustable voltage limit and a wide operating temperature range.

Working Principle

The MAX6384XS28D2-T monitors the voltage of the VDD and VCC inputs, and compares them to their respective high and low voltage thresholds. When either voltage exceeds its programmed threshold, the MAX6384XS28D2-T will produce a reset output. The reset output is held active until both voltages return to normal levels.

In addition to the voltage monitor, the MAX6384XS28D2-T contains an adjustable reset timer. This timer delays the reset output until the system stabilizes and has reached a known state. The timer can also be used to delay the release of the reset output for a specified amount of time.

The MAX6384XS28D2-T can also be used to monitor battery conditions. The supervisor can detect a low battery level (below the low-voltage-threshold) and alert the system in order to prevent data losses. It can also detect a high battery level (above the high-voltage-threshold) by resetting the system in order to prevent damage.

The MAX6384XS28D2-T is an ideal low-power power-management solution for a wide range of applications. By combining the adjustable voltage limit, adjustable timer delay, and the ability to detect both high and low power supply fault conditions, the MAX6384XS28D2-T provides a cost-effective solution for monitoring and resetting microprocessor-based systems.

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