MAX6429LSUR+T

Overview

The MAX6429LSUR+T is a low-power, single-level battery monitor with internal hysteresis, manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a low-battery output indicator to signal three battery conditions: good, weak, or empty. The device features factory-trimmed thresholds and is available in an SOT-23-3 package. It operates over a specified temperature range and includes a minimum timeout period to ensure supply voltage stability before enabling power-converter or microprocessor activity.

Feature Summary

• Provides single low-battery output indication for monitoring battery status
• Includes internal hysteresis to prevent output chatter during threshold transitions
• Features a minimum timeout period to ensure supply voltages stabilize before system activation

Applications

• Monitoring single lithium-ion cells
• Monitoring multicell alkaline power supplies
• Monitoring NiCd/NiMH power supplies

Procurement Notes

Verify the specific suffix 'L' against official documentation to confirm the exact threshold voltage level, as this variant determines the trip point. Ensure the '+T' designation matches the required reel packaging format. Confirm RoHS compliance and lead-free status through the manufacturer's current datasheet revision. Cross-reference the part number with the latest ordering information to avoid obsolete or discontinued variants.

Selection Notes

Select this component when a single low-battery warning is sufficient for system power management. Consider the MAX6427/MAX6428 series if dual-level outputs are required for more granular battery state indication. Evaluate the need for user-adjustable thresholds; if adjustable levels are necessary, consider the MAX6433–MAX6438 family instead of the factory-trimmed MAX6427–MAX6432 options.

Part Context

The MAX6429LSUR+T belongs to the MAX6427–MAX6438 family of single/dual-level battery monitors. This family offers both factory-trimmed (MAX6427–MAX6432) and user-adjustable (MAX6433–MAX6438) threshold options. The MAX6429 specifically provides a single low-battery output, distinguishing it from dual-output variants like the MAX6430–MAX6432.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.