MAX6431MRUS

Overview

The MAX6431MRUS is a dual-level battery monitor from the MAX6427–MAX6438 family, designed for monitoring single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies. It features internal hysteresis and provides two low-battery output indicators to signal three distinct battery conditions: good, weak, or empty. The device asserts its outputs when supply voltages drop below specified thresholds and deasserts them after rising above high thresholds following a minimum timeout period. This component operates within an extended temperature range of -40°C to +85°C and is housed in a compact 5-pin SOT-23 package.

Feature Summary

• Dual low-battery output indicators provide status signals for normal, low-power, and disabled system modes
• Internal hysteresis prevents output oscillation during voltage transitions near threshold levels
• Minimum timeout period ensures supply voltage stabilization before enabling power-converter or microprocessor activity

Applications

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

Procurement Notes

Verify the specific suffix MRUS against official Analog Devices documentation to confirm pinout and package configuration. Confirm RoHS compliance status as indicated in current datasheets. Check availability status as this product line may have limited supply or obsolescence notices.

Selection Notes

Select this component when dual independent low-battery thresholds are required for complex power management strategies. Ensure the application requires the specific hysteresis characteristics and timeout delays defined in the MAX6431 specifications. Verify that the 5-pin SOT-23 package fits the design constraints.

Part Context

This part belongs to the MAX6427–MAX6438 series of low-power battery monitors. Unlike single-output variants, this model offers two separate indicators, allowing for more granular battery state detection. It shares common family features such as low quiescent current and compatibility with various battery chemistries.

Replacement Considerations

Consider other members of the MAX6427–MAX6438 family, such as the MAX6430, MAX6432, MAX6436, MAX6437, or MAX6438, which also feature dual-level monitoring. Single-level alternatives include the MAX6427, MAX6428, MAX6429, MAX6433, MAX6434, and MAX6435.