MAX6441KAEHRD3-T

Overview

The MAX6441KAEHRD3-T is a low-power, single/dual-level battery monitor with hysteresis and an integrated microprocessor reset supervisor. It operates within a supply voltage range of 1 V to 5.5 V and features an active-low reset output with a manual push-button reset function. The device utilizes an SOT-23-8 surface-mount package and supports operation across a temperature range of -40°C to +85°C. Designed for ultra-low-power applications, it eliminates the need for external components by providing factory-trimmed thresholds.

Feature Summary

• Integrates dual low-battery outputs to signal battery status levels including OK, low, and dead conditions.
• Includes an independent microprocessor supervisor that monitors VCC and provides an active-low reset output.
• Features built-in hysteresis on battery thresholds to prevent output chattering in battery-operated systems.
• Supports manual system reset via an external push-button without requiring additional external components.

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability. Confirm RoHS compliance status as some variants may differ. Validate the specific suffix codes against official datasheets to ensure correct threshold configurations. Check for obsolescence notices or lifecycle restrictions before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring precise battery level detection without external resistors. Ensure the fixed factory-trimmed thresholds align with the specific battery chemistry requirements. Verify that the SOT-23-8 package fits the PCB layout constraints. Consider the operating temperature range suitability for the intended environmental conditions.

Part Context

This part belongs to the MAX6439–MAX6442 family of ultra-low-power battery monitors manufactured by Maxim Integrated, now part of Analog Devices. These devices are designed to replace discrete comparator-based solutions, offering reduced board space and simplified design processes for portable electronic applications requiring reliable power management.

Replacement Considerations

Cross-reference with other MAX6441 variants sharing the same package and electrical characteristics. Verify that alternative parts maintain compatible threshold voltages and reset timing specifications. Ensure pinout compatibility if direct replacement is required without PCB redesign.