MAX6348UR45+T

Overview

The MAX6348UR45+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2V to 5.5V and features a reset threshold voltage of 4.5V with an overvoltage threshold of 4.568V. The device provides an active low, open-drain output and includes a fixed reset delay time of 260ms. It consumes a maximum operating supply current of 3.5uA and supports power dissipation up to 320mW. The component is housed in an SOT-23-3 package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Single input voltage monitoring capability
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered instrumentation and sensors
• Embedded systems needing reliable voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific lot traceability requirements. Ensure the ordering suffix matches the required tape and reel configuration. Validate that the part number corresponds exactly to the UR45 variant to avoid functional mismatches in voltage threshold applications.

Selection Notes

Select this component when a precise 4.5V reset threshold is required for single-rail monitoring. Consider the 3.5uA quiescent current for strict energy budgeting. The open-drain output allows flexible logic level interfacing. Verify that the 260ms delay meets system startup timing constraints. Ensure the SOT-23-3 footprint aligns with existing PCB layout specifications.

Part Context

This part belongs to the MAX6348 series of ultra-low-power reset circuits. It shares architectural similarities with other variants in the family but differs in specific threshold voltages and package options. The series is designed for applications where minimal standby current is critical. It complements broader power management solutions by providing dedicated voltage supervision without complex configuration.

Replacement Considerations

Direct substitutes include MAX6348UR45+ and MAX6348UR45TA. Cross-reference with MAX6348UR33+T or MAX6348UR34+T only if lower threshold voltages are acceptable. Verify pinout compatibility and thermal characteristics before substitution.