MAX6328UR29

Overview

The MAX6328UR29 is a precision voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range up to 5.5 V and features an overvoltage threshold of 2.974 V with a reset threshold of 3 V. The device draws 500 nA of operating supply current and provides an active low, open drain output. It includes a fixed reset delay time of 185 ms and maintains an accuracy of 1.5%. The component is housed in a SOT-23-3 package and functions without manual reset, watchdog timer, or chip enable signals.

Feature Summary

• Ultra-low-power operation with 500 nA supply current
• Active low open-drain output for direct logic interfacing
• Precision voltage monitoring with 1.5% accuracy
• Compact three-pin surface-mount packaging

Applications

• Portable battery-powered equipment
• Handheld instruments
• Wireless communication devices
• Battery backup systems

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as MAX6328UR29+T indicate tape-and-reel packaging while other suffixes may denote different handling formats. Confirm availability status through authorized distributors, as supply constraints may apply to this component series. Ensure the selected part matches the required threshold voltage and package type for your design implementation.

Selection Notes

Select this component when designing circuits requiring minimal quiescent current consumption for extended battery life. The fixed 185 ms reset delay and 1.5% accuracy make it suitable for applications where precise power sequencing is necessary without complex configuration. Consider the SOT-23-3 footprint for space-constrained layouts and verify that the 5.5 V maximum input rating aligns with the system's supply rails.

Part Context

This device belongs to the MAX6328U series of ultra-low-power reset circuits designed for portable electronics. The family offers various threshold voltages to accommodate different supply rails while maintaining consistent low-power characteristics. These components are engineered to replace traditional supervisor ICs that consume higher currents, enabling longer operational times in battery-dependent applications.

Replacement Considerations

Compatible alternatives include MAX6328UR23+T and MAX6328UR30+T from the same manufacturer series. Verify that substitute parts match the required threshold voltage and package dimensions before integration into existing designs.