MAX6346UR46

Overview

The MAX6346UR46+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.63 V with an overvoltage threshold of 4.699 V. The device provides an active low, push-pull reset output with a reset delay time of 185 ms. It consumes 500 nA of operating supply current and maintains an accuracy of 1.5 %. The component is housed in a SOT-23-3 package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Active low push-pull reset output configuration
• Fixed 4.63 V threshold voltage monitoring
• Compact SOT-23-3 surface mount packaging

Applications

• Portable electronic devices requiring extended battery life
• Microprocessor system power supervision
• Battery-operated equipment voltage monitoring
• Embedded systems reset circuitry

Procurement Notes

Verify the specific suffix (+T) indicates tape and reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the part number matches the exact threshold voltage requirement of 4.63 V for your design. Check availability status as distribution may vary by region. Validate that the SOT-23-3 footprint aligns with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed 4.63 V threshold is required for single-input voltage monitoring. The push-pull output eliminates the need for external pull-up resistors compared to open-drain alternatives. Consider the 185 ms reset timeout duration against system startup requirements. Evaluate the 500 nA quiescent current impact on overall system power budget. Ensure the 5.5 V maximum supply rating accommodates potential input voltage spikes in the application environment.

Part Context

This part belongs to the MAX6346 series of microprocessor supervisory circuits from Maxim Integrated. It is designed for applications requiring reliable power management in compact form factors. The series offers various threshold voltages and output configurations to suit different system architectures. Analog Devices acquired Maxim Integrated, integrating these products into their portfolio.

Replacement Considerations

MAX6346UR44+T offers a 4.38 V threshold with identical package and output type. MAX6348UR46+T shares the 4.63 V threshold but utilizes an open-drain output instead of push-pull.