MAX6429AGUR+T

Overview

The MAX6429AGUR+T is a low-power, single-level battery monitor with internal hysteresis, part of the MAX6427–MAX6438 family. It provides a low-battery output indicator to signal three battery conditions: good, weak, or empty. The device features factory-trimmed thresholds and operates in SOT-23-3 packages. It asserts the output when voltage drops below the specified low threshold and deasserts after rising above the high threshold following a minimum timeout period.

Feature Summary

• Provides single low-battery output indication for monitoring battery status
• Includes internal hysteresis to prevent output chatter during voltage transitions
• Features 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 the specific suffix 'A' against official Maxim Integrated documentation to confirm the exact factory-trimmed threshold voltage range. Ensure the ordering quantity meets manufacturer requirements for non-standard versions, as sample stock may be limited to standard versions only.

Selection Notes

Select this component for applications requiring precise, factory-calibrated battery monitoring without user-adjustable thresholds. Consider the SOT-23-3 package size for space-constrained designs. Verify that the fixed threshold voltages align with the specific battery chemistry and cutoff requirements of the target system.

Part Context

This component belongs to the MAX6427–MAX6438 series of low-power battery monitors manufactured by Analog Devices / Maxim Integrated. The series includes both single-level and dual-level output variants, offering flexibility for different battery management architectures while maintaining low current consumption.

Replacement Considerations

Compatible substitutes within the same family include MAX6427, MAX6428, MAX6433, MAX6434, and MAX6435, provided their specific threshold voltages match the design requirements.