MAX6440UTEHRD3

Overview

The MAX6440UTEHRD3 is a single battery monitor from the MAX6439–MAX6442 family, designed for ultra-low-power applications. It integrates microprocessor supervisor functions with dual low-battery output options to signal battery status levels. The device operates within a supply voltage range of 1 V to 5.5 V and features an active-low reset output for the microprocessor. It includes a manual reset function accessible via a push-button. The component is housed in a compact SOT-23-6 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates precision reference and dual comparators for independent monitoring of battery and system voltages
• Provides factory-trimmed thresholds for accurate low-battery detection without external components
• Includes independent microprocessor supervisor with active-low reset output and manual reset capability

Applications

• Portable electronic devices requiring precise battery monitoring
• Industrial networking equipment utilizing Power over Ethernet controllers
• Systems needing automated shutdown or low-power mode activation based on battery state

Procurement Notes

Verify availability as distribution channels may indicate limited stock or special order requirements. Confirm RoHS compliance status through official manufacturer documentation before procurement. Ensure the specific suffix matches the required threshold voltages and package type for your design implementation.

Selection Notes

Select this component when a single-channel battery monitor with integrated microprocessor supervision is required. It is suitable for designs needing distinct signals for OK, Low, and Dead battery states. Consider the fixed threshold options provided by the UTEH suffix against other family members if different voltage levels are needed.

Part Context

This part belongs to the MAX6439–MAX6442 series of battery monitors with integrated µP supervisors. These devices are engineered to eliminate external components by providing internal timing logic and reference voltages. The series offers various factory-trimmed threshold combinations to accommodate different battery chemistries and system requirements.

Replacement Considerations

Review MAX6440UTLTZD3+T and MAX6440UTLQYD3+T for alternative threshold configurations within the same package. Verify that the replacement part maintains compatibility with the required voltage ranges and reset timing specifications.