MAX6428AGUR

Overview

The MAX6428AGUR is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.7V to 5.5V and features a threshold voltage of 4.38V with an accuracy of 1%. The device provides an active-low, open-drain output and includes a fixed reset delay time of 200ms. It functions without manual reset or watchdog timer capabilities. The component is housed in a SC-70-3 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low-power consumption for extended battery life
• Compact SC-70-3 surface-mount packaging
• Active-low open-drain supervisor output

Applications

• Portable electronic devices requiring voltage monitoring
• Battery-powered systems needing power-fail detection
• Embedded controllers requiring supervised power-up sequences

Procurement Notes

Verify the specific suffix 'GUR' against official manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure the selected variant matches the required threshold voltage and operating temperature range for the target application environment before finalizing procurement.

Selection Notes

Select this component when a compact footprint and minimal quiescent current are critical design constraints. The fixed 200ms reset delay suits applications where immediate response is not required. Verify that the open-drain output configuration aligns with the system's pull-up requirements and logic levels.

Part Context

This part belongs to the MAX6428X series of ultra-low-power voltage supervisors. The series is designed for portable electronics where space and power efficiency are paramount. The AGUR designation indicates specific manufacturing tolerances and packaging options within the broader product family.

Replacement Considerations

Consult official cross-reference guides for verified substitutes. Ensure replacement parts match the SC-70-3 package dimensions and electrical specifications.