MAX6731AUTZD3+T

Series:	--
Packaging:	Strip
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	2.313V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-6
Supplier Device Package:	SOT-23-6

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PMIC - Supervisors Application Field and Working Principle

Power Management Integrated Circuits (PMICs) are a unique type of integrated circuit that are installed in portable and mobile devices as system-level monitoring, controlling and supplying power to various components. Supervisors are one of the four major types of PMICs, responsible for measuring and ensuring system stability and preventing system failure. The MAX6731AUTZD3+T is a leading supervisor PMIC designed to address a wide range of power management needs for computers, laptops, tablets, phones and IoT based devices.

Features and Specifications of MAX6731AUTZD3+T

The MAX6731AUTZD3+T is a low-cost solution that provides comprehensive monitoring, diagnostics and control of power supply systems on system, board, cell or individual IC level. It features two independent voltage supervisors, one programmable reset output and one push-pull reset output, each equipped with precision trip points and reset delays, accurate to ±2.9 mV. The supervisor chip has six power supplies with programmable voltage trip points for under voltage and/or over voltage detection, low supply current of only 2 μA, adjustable reset delay from 67 ms to 28.7 s, reset outputs hold for 12 ms minimum and shutdown current of 0.4 µA maximum.The supervisor also features two programmable power-fail comparators, one to detect under voltage via falling edge detection and the other to detect over voltage via rising edge detection. The MAX6731AUTZD3+T is built using advanced bipolar CMOS 5V and 3V technologies to ensure operation across a wide temperature range and provide maximum accuracy.

Application Field of MAX6731AUTZD3+T

The MAX6731AUTZD3+T supervisor provides a reliable, low-cost solution for power supply monitoring, diagnosis and control in a wide range of consumer and industrial devices. Its small size and power consumption enable effective integration of highly reliable power system monitoring in slim, space-constrained designs. The chip is suitable for use in notebook PCs, PDAs/smartphones, tablet PCs, servers, industrial control systems, medical equipment and consumer electronics.

Working Principle of MAX6731AUTZD3+T

The MAX6731AUTZD3+T is designed to accurately detect a power supply’s voltage and adjust the electrical control signals to ensure the system\'s safe and reliable operation. The supervisor chip consists of two voltage reference circuits and six power supplies, each with a programmable high and low trip point for an under voltage and/or an over voltage detection, as well as over voltage and under voltage power-fail comparators. The monitoring of up to 6 supply voltages and distance to trip points as well as the overriding power-fail comparator input guarantees situation-appropriate timing of the output signals. The MAX6731AUTZD3+T accurately monitors and responds to power supply voltage levels in real time and uses various analog and digital techniques to ensure a fast and accurate response in an economical form factor. Once power supply voltage reaches the set trip point, the supervisor would immediately generate a digital long reset output to alert the controller IC and issue a system reset. The device also incorporates adjustable reset delays to provide manual overrides of reset outputs and prevent false triggering of reset outputs due to false voltage conditions.

Conclusion

The MAX6731AUTZD3+T is a low-cost, space efficient solution for monitoring and controlling power supplies in a wide range of applications. It features versatile, adjustable features which offer the flexibility to customize how the supervisor responds to voltage levels. The excellent accuracy, low power consumption, high reliability and wide operating temperature range of the MAX6731AUTZD3+T offer expanded possibilities for the design and implementation of system level power management solutions.

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