MAX6438UT+T

Overview

The MAX6438UT+T is a single battery monitor IC from the MAX6427–MAX6438 family, designed for multi-chemistry power supply supervision. It operates within a supply voltage range of 1 V to 5.5 V and functions across an industrial temperature range of -40°C to +85°C. The device is housed in a compact SOT-23-6 surface-mount package. It provides dual low-battery output indicators to signal three distinct battery states: good, weak, or empty. This component is suitable for monitoring single lithium-ion cells or multicell alkaline, NiCd, and NiMH batteries.

Feature Summary

• Provides dual low-battery output indicators for comprehensive power status monitoring
• Supports multi-chemistry battery types including Li+, alkaline, NiCd, and NiMH
• Integrates internal hysteresis to ensure stable threshold detection

Applications

• Single lithium-ion cell monitoring
• Multicell alkaline power supply supervision
• NiCd/NiMH battery pack management

Procurement Notes

Verify the specific suffix RD3 if required by your bill of materials, as the base part number may have variations. Confirm RoHS compliance details directly with the manufacturer documentation. Check current availability status as distribution channels may report limited stock or special order requirements for this specific Maxim Integrated component.

Selection Notes

Select this component when dual-stage battery warning capabilities are necessary for system power management. It is appropriate for designs requiring supervision of various battery chemistries without external threshold adjustment components. Ensure the SOT-23-6 package fits the PCB layout constraints and that the operating voltage range aligns with the target battery configuration.

Part Context

This device belongs to the MAX6427–MAX6438 series of low-power, single/dual-level battery monitors. These circuits eliminate the need for external adjustments by using internally trimmed resistor networks. They are engineered to indicate battery conditions accurately, allowing systems to switch between normal, low-power, or disabled modes based on voltage thresholds.

Replacement Considerations

The MAX6439UTPQRD3+T is a related variant within the same product family offering similar monitoring functions. Verify pin compatibility and specific threshold specifications before substitution.