MAX6427MRUR+

Overview

The MAX6427MRUR+T is a low-power, single-level battery monitor manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.6 V to 5.5 V and features an internal hysteresis mechanism for stable threshold detection. The device utilizes a SOT-23-3 surface-mount package suitable for compact designs. It functions as a power supply support circuit, asserting a low-battery output when the supply voltage drops below a specified threshold and deasserting it after rising above a high threshold following a minimum timeout period.

Feature Summary

• Provides single low-battery output indication with internal hysteresis
• Ensures supply voltage stabilization via a minimum timeout period before output deassertion
• Supports operation across a wide supply voltage range from 1.6 V to 5.5 V

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance documentation matches current regulatory requirements. Validate that the SOT-23-3 package dimensions align with existing PCB footprints. Ensure storage conditions adhere to moisture sensitivity level specifications prior to reflow soldering processes.

Selection Notes

Select this component for applications requiring simple, low-power battery status monitoring without complex communication interfaces. The single-output configuration is suitable for systems needing basic low-battery warnings. Consider the specific voltage thresholds required for the target battery chemistry. Evaluate the trade-off between the fixed threshold nature of this part versus adjustable alternatives if precise voltage tracking is necessary.

Part Context

This part belongs to the MAX6427–MAX6438 family of low-power battery monitors. The family includes variants with single or dual low-battery output indicators. These devices are designed to indicate three battery conditions: good, weak, or empty. The MAX6427 specifically offers a single output indicator, distinguishing it from dual-output counterparts in the same series.

Replacement Considerations

Public confirmed substitute part numbers are not available.