MAX6429EHUR-T

Overview

The MAX6429EHUR-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 internal hysteresis for stable switching. The device asserts a low-battery output when the supply drops below a specified threshold and deasserts it after rising above a high threshold, following a minimum 140ms timeout period. This delay ensures supply stabilization before enabling power-converter or microprocessor activity. It is housed in a SOT-23-3 package.

Feature Summary

• Provides single low-battery output indication with internal hysteresis
• Includes a minimum 140ms timeout period to ensure supply voltage stabilization
• Supports monitoring of single lithium-ion cells and multicell alkaline/NiCd/NiMH supplies

Applications

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

Procurement Notes

Verify component authenticity as this part may be discontinued or subject to limited availability. Confirm the specific suffix 'T' indicates tape-and-reel packaging if required by assembly processes. Check current distributor status for active sales regions, as some vendors report no sales in certain areas. Ensure RoHS compliance documentation matches the '+T' designation.

Selection Notes

Select this component for applications requiring a simple, low-power battery status indicator. It is suitable for systems needing to distinguish between normal, low-power, and disabled states based on a single voltage threshold. Consider the SOT-23-3 package size for space-constrained designs. Verify that the operating temperature range of -40°C to +85°C meets environmental requirements.

Part Context

The MAX6429EHUR-T belongs to the MAX6427–MAX6438 series of battery monitors. This family includes variants with single or dual low-battery output indicators. The MAX6429 specifically offers a single output, distinguishing it from dual-output models like the MAX6430. These devices are designed to manage system power modes based on battery health.

Replacement Considerations

Other members of the MAX6427–MAX6438 family may serve as substitutes depending on whether single or dual outputs are needed. Verify pin compatibility and threshold voltages when considering alternatives within the same series.