MAX6429OQUR+T

Overview

The MAX6429OQUR+T is a low-power, single-level battery monitor from the MAX6427–MAX6438 family. It operates within a supply voltage range of 1.6 V to 5.5 V and features an internal hysteresis mechanism to prevent output chatter during voltage transitions. The device asserts a low-battery output when the supply voltage drops below a specified threshold and deasserts it after rising above a high threshold, following a minimum 140 ms timeout period to ensure supply stabilization. Packaged in a compact SOT-23-3 surface-mount format, it supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Provides single low-battery output indication for monitoring battery conditions
• Integrates internal hysteresis to stabilize output signals against noise
• Includes a 140 ms minimum timeout period to verify supply voltage stability before enabling system activity

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance and package integrity upon receipt. Cross-reference datasheet revisions to ensure compatibility with existing design specifications. Validate thermal performance within the specified operating temperature range during integration.

Selection Notes

Select this component for applications requiring simple, low-power battery level indication without complex communication interfaces. Suitable for systems where a single threshold detection is sufficient to trigger low-power modes or system shutdown. Ideal for space-constrained designs utilizing SOT-23-3 packaging.

Part Context

This part belongs to the MAX6427–MAX6438 series of battery monitors. While the MAX6427/MAX6428/MAX6429 variants offer single-level outputs, other members like the MAX6430 provide dual-level indicators. All share similar low-power architectures and hysteresis features but differ in output configuration options.

Replacement Considerations

Check for MAX6427MRUR+T or MAX6428MRUR+T as functional equivalents within the same single-output family. Verify pinout compatibility and threshold voltage specifications before substitution.