MAX6363PUT31+T

Overview

The MAX6363PUT31+T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 2.3 V to 5.5 V and features a fixed reset threshold voltage of 3.15 V. The device provides an active-low, open-drain output with a typical reset delay time of 280 ms. It includes a battery backup switch for seamless transition between power sources and lacks manual reset or watchdog timer functions. The component is housed in a compact SOT-23-6 surface-mount package and supports operation across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides reliable system reset monitoring with a fixed 3.15 V threshold voltage
• Integrates a battery backup switch to maintain continuity during power transitions
• Delivers an active-low open-drain reset signal with a standard 280 ms delay
• Designed for ultra-low power consumption suitable for battery-operated applications

Applications

• Microprocessor (MPU) power supply supervision
• Battery-powered portable electronic devices
• Consumer electronics requiring low standby current
• Industrial control systems operating in harsh environments

Procurement Notes

Verify the specific suffix '31' corresponds to the required 3.15 V threshold voltage, as this variant differs from other threshold options in the MAX6363 family. Confirm that the absence of a manual reset input aligns with the design requirements, as some applications may necessitate external reset controls. Ensure the SOT-23-6 footprint matches the PCB layout constraints and that the open-drain output configuration is compatible with the downstream logic levels.

Selection Notes

Select this component when a fixed 3.15 V reset threshold is required without the need for adjustable settings. The choice is appropriate for designs prioritizing minimal quiescent current over programmable features. Consider the lack of a watchdog timer if system reliability requires automatic recovery from software hangs. Verify compatibility with the target system's voltage rails and ensure the open-drain output can be properly pulled up to the desired logic level.

Part Context

The MAX6363P series belongs to Maxim Integrated's portfolio of low-power supervisory circuits designed for general-purpose voltage monitoring. This specific part number represents a variant within the MAX6363 family, distinguished by its fixed threshold voltage and passive reset architecture. The series is widely utilized in embedded systems where precise voltage tracking and low power consumption are critical for maintaining system integrity during brown-out conditions.

Replacement Considerations

Cross-reference with other MAX6363 variants such as MAX6363PUT23+T or MAX6363PUT33+T if different threshold voltages are acceptable. Verify pinout compatibility with the SOT-23-6 package before substitution.