MAX6429ORUR+T

Overview

The MAX6429ORUR+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 is housed in a compact SOT-23-3 surface-mount package. Designed for monitoring single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies, it asserts a low-battery output when the supply drops below a specified threshold. The device includes internal hysteresis and a minimum 140ms timeout period to ensure supply stabilization before enabling system activity.

Feature Summary

• Provides single low-battery output indication for three distinct battery conditions: good, weak, and empty.
• Features internal hysteresis to prevent output oscillation during voltage transitions.
• Includes a minimum 140ms timeout period to ensure supply voltage stability before activating power-converter or microprocessor functions.

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to potential availability issues. Confirm RoHS compliance status via official documentation. Check for end-of-life notifications as discontinuation may affect long-term supply. Ensure ordering suffixes match exact specifications. Validate datasheet revisions against current design requirements.

Selection Notes

Select this component for applications requiring simple, low-power battery level monitoring without complex communication interfaces. Suitable for systems needing basic low-battery warnings with built-in noise immunity via hysteresis. Ideal for space-constrained designs utilizing SOT-23-3 packaging. Consider the fixed threshold characteristics when defining system power management strategies.

Part Context

The MAX6429ORUR+T belongs to the MAX6427–MAX6438 series of single/dual-level battery monitors. This family offers various monitoring options for different battery chemistries and threshold configurations. The ORUR suffix indicates specific pinout and thermal characteristics within the SOT-23-3 package family, distinguishing it from other variants like EJUR or MRUR.

Replacement Considerations

Direct substitutes include MAX6427ORUR+T and MAX6428ORUR+T from the same family, which share identical pinouts and functional blocks but differ in voltage thresholds. Verify threshold compatibility before substitution. Other MAX64xx series devices may require schematic review due to varying pin configurations or dual-level outputs.