MAX6440UTEHRD3-T

Overview

The MAX6440UTEHRD3-T is a single-cell battery monitor from the MAX6439–MAX6442 family, designed for multi-chemistry applications. 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 integrates a microprocessor supervisor with an active-low reset output and supports manual reset via push-button. Packaged in a compact SOT-23-6 surface-mount format, it requires no external components.

Feature Summary

• Integrates dual low-battery outputs to signal battery status levels including OK, low, and dead conditions
• Includes an independent microprocessor supervisor providing active-low reset functionality
• Supports manual system reset through a dedicated push-button interface
• Operates without requiring any external passive components

Applications

• Single-cell multi-chemistry battery monitoring systems
• Microprocessor power supply supervision circuits
• Low-power portable electronic devices requiring battery status indication

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS compliance status as variations exist within the product line. Ensure the specific suffix matches the required threshold voltages and package type. Validate that the supplier provides traceable documentation for quality assurance purposes.

Selection Notes

Select this component when a single-channel battery monitor with integrated CPU reset is required. Choose based on the fixed factory-trimmed threshold voltages suitable for the target battery chemistry. Consider the SOT-23-6 package for space-constrained designs. Verify operating voltage compatibility with the system logic levels before integration.

Part Context

This part belongs to the MAX6439–MAX6442 series of ultra-low-power battery monitors. The family offers various configurations with single or dual low-battery outputs. These devices are engineered to provide reliable power management for embedded systems by combining battery health monitoring with processor reset generation in a minimal footprint.

Replacement Considerations

Cross-reference with other members of the MAX6439–MAX6442 family for alternative threshold options. Verify pinout compatibility if substituting with similar SOT-23-6 battery monitors. Ensure the replacement maintains the same manual reset capability and active-low reset polarity.