MAX6429KRUR+T

Overview

The MAX6429KRUR+T is a low-power, single-level battery monitor with internal hysteresis, manufactured by Analog Devices Inc. under the Maxim Integrated brand. 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. The device functions as a power-supply support circuit, monitoring battery conditions to indicate when power is good, weak, or empty. It features a push-pull low-battery output that asserts when the supply drops below a specified threshold and deasserts after a minimum timeout period once voltage recovers above the high threshold.

Feature Summary

• Provides single low-battery output indication for monitoring battery health states
• Incorporates internal hysteresis to prevent output chatter during voltage transitions
• Includes a minimum timeout period to ensure supply voltage stabilization before enabling system activity

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability constraints. Confirm RoHS compliance status via official documentation. Check for end-of-life notifications or discontinuation notices from the manufacturer prior to finalizing procurement plans.

Selection Notes

Select this component for applications requiring simple, low-power battery level monitoring without complex multi-threshold requirements. Ensure the operating voltage range aligns with the target battery chemistry. Consider the SOT-23-3 package size for space-constrained designs.

Part Context

This part belongs to the MAX6427–MAX6438 family of low-power battery monitors. These devices are designed to replace traditional resistor-divider-based monitoring solutions, offering factory-trimmed thresholds and reduced current consumption. The family supports various output configurations and package options to suit diverse embedded system needs.

Replacement Considerations

Compatible substitutes within the same family include MAX6427 and MAX6428, which share similar low-power characteristics and single-output functionality. Verify threshold voltage specifications match application requirements when substituting.