MAX6428EIUR+T

Overview

The MAX6428EIUR+T is a single-input voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of up to 5.5 V and features an active low, open-drain output. The device monitors a single input with a threshold voltage of 3 V and provides a reset delay time of 185 ms. It exhibits an accuracy of 1.5% and consumes a working power supply current of 500 nA. The component is housed in a SOT-23-3 package and functions reliably across a temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Single-channel voltage monitoring with precise threshold detection
• Compact surface-mount packaging for space-constrained designs

Applications

• Battery management systems requiring single-cell monitoring
• Portable electronic devices needing low standby current
• Embedded systems requiring voltage supervision

Procurement Notes

Verify the specific suffix UR30 or EIUR against official datasheets to confirm pinout and electrical characteristics. Confirm RoHS compliance status through manufacturer documentation. Ensure the supplier provides traceable origin for Maxim Integrated components to avoid counterfeit risks. Check availability constraints as distribution may vary by region.

Selection Notes

Select this component when a single voltage monitor with ultra-low quiescent current is required. The SOT-23-3 package suits applications with limited board space. Verify that the 3 V threshold aligns with the monitored rail. Consider the 185 ms reset delay for system startup timing requirements.

Part Context

This part belongs to the MAX6328/MAX6428 family of supervisory circuits designed for low-power applications. These devices provide reliable reset signals for microprocessors and memory systems. The Maxim Integrated line emphasizes minimal power consumption while maintaining high accuracy for critical voltage monitoring tasks.

Replacement Considerations

Check for direct substitutes within the MAX6328 series with compatible thresholds. Verify pin compatibility for SOT-23-3 packages. Ensure replacement parts match the 500 nA current consumption and 1.5% accuracy specifications.