MAX6428MRUR-T

Overview

The MAX6428MRUR-T is a single-level battery monitor from the MAX6427–MAX6438 family, designed for low-power applications. It operates within a supply voltage range of 1.6 V to 5.5 V and functions across an industrial temperature range of -40°C to +85°C. The device utilizes a SOT-23-3 surface-mount package. It provides a low-battery output indicator that asserts when the supply voltage drops below a specified threshold and deasserts after a minimum 140ms timeout period once the voltage recovers above the high threshold.

Feature Summary

• Provides internal hysteresis to prevent output oscillation during voltage transitions
• Includes a minimum 140ms timeout period to ensure supply voltage stabilization before enabling system activity
• Supports monitoring of single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies

Applications

• Monitoring single lithium-ion (Li+) battery cells
• Monitoring multicell alkaline power supplies
• Monitoring NiCd or NiMH battery packs

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance and lead-free specifications against current manufacturing records. Validate the specific suffix configuration against the official datasheet to ensure correct threshold voltage selection. Check for alternative sources if immediate availability is required.

Selection Notes

Select this component for applications requiring simple, low-power battery level indication without complex communication interfaces. Ensure the fixed threshold voltage matches the specific battery chemistry requirements. Consider the SOT-23-3 package constraints for PCB layout. Verify that the 140ms delay aligns with system startup timing requirements.

Part Context

This part belongs to the MAX6427–MAX6438 series of low-power battery monitors. The series offers both single and dual-level output options. The MAX6428 specifically provides a single low-battery output indicator. It is categorized under Power Management ICs (PMIC) and Battery Management products within the Analog Devices portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.