MAX6429BGUR+T

Overview

The MAX6429BGUR+T is a low-power, single-level battery monitor with internal hysteresis, housed in an SOT-23-3 package. It functions as a voltage supervisory circuit designed to indicate three distinct battery conditions: good, weak, and empty. The device monitors single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies. When the supply voltage drops below the specified low threshold, the output asserts. A minimum timeout period ensures supply stabilization before system activity resumes.

Feature Summary

• Provides single-level low-battery output indication with internal hysteresis
• Supports monitoring of single lithium-ion cells and multicell alkaline/NiCd/NiMH power supplies
• Includes a minimum timeout period to ensure supply voltage stabilization before enabling system activity

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as this part may be discontinued. Ensure the SOT-23-3 package matches your PCB footprint requirements. Validate that the specific suffix corresponds to the desired electrical characteristics and temperature range.

Selection Notes

Select this component when a simple, low-power solution is needed for single-cell battery monitoring. It is suitable for applications requiring clear indication of battery states without complex interface protocols. Consider the SOT-23-3 package size constraints and the specific threshold voltages required for your battery chemistry. Evaluate if the internal hysteresis meets your noise immunity needs.

Part Context

This component belongs to the MAX6427–MAX6438 family of low-power battery monitors. These devices are designed to provide reliable low-battery detection for portable electronics. The family offers various monitoring options, including single and dual-level outputs, to accommodate different system requirements and battery chemistries.

Replacement Considerations

Compatible substitutes within the same family include MAX6427, MAX6428, MAX6430, MAX6431, MAX6432, MAX6433, MAX6434, MAX6435, MAX6436, MAX6437, and MAX6438. Verify pinout compatibility and threshold voltage specifications before substitution.