MAX6439UTEISD3

Overview

The MAX6439UTEISD3+ is a single-battery monitor from the MAX6439 family, housed in a SOT-23-6 package. It operates within a supply voltage range of 1 V to 5.5 V and supports an industrial temperature range of -40°C to +85°C. This component integrates low-battery detection with hysteresis and includes an independent microprocessor reset supervisor. The device provides active-low outputs for battery status indication and system reset control.

Feature Summary

• Integrates ultra-low-power battery monitoring with factory-trimmed threshold levels
• Includes an independent microprocessor supervisor with manual reset capability
• Provides active-low output signals for low-battery and dead-battery conditions
• Requires no external components for basic operation

Applications

• Single-cell lithium-ion battery monitoring systems
• Multicell alkaline or NiCd/NiMH battery pack management
• Microprocessor reset supervision in portable electronic devices
• Low-power embedded systems requiring battery life extension

Procurement Notes

Verify the specific suffix 'EIS' against the official Analog Devices datasheet to confirm the exact low-battery threshold voltages and hysteresis values. Ensure the ordering part number matches the required electrical specifications for your application. Confirm RoHS compliance status and availability through authorized distributors, as lead times may vary.

Selection Notes

Select this component when a single low-battery threshold is sufficient for the application. Compare the factory-trimmed thresholds against the minimum operating voltage of the target battery chemistry. Ensure the SOT-23-6 package fits the PCB layout constraints. Verify that the integrated reset supervisor meets the timing requirements of the connected microprocessor.

Part Context

The MAX6439UTEISD3+ belongs to the MAX6439–MAX6442 family of battery monitors. These devices are designed for applications requiring precise battery level detection without external resistors. The family offers various threshold combinations to suit different battery types, including Li+, alkaline, and NiMH chemistries, providing a flexible solution for portable electronics.

Replacement Considerations

Check the MAX6439UTLSD3+ or MAX6439UTLTSD3+ if different threshold levels are acceptable. Verify pin compatibility and electrical parameters before substitution. Consult the official cross-reference guide for equivalent parts with similar reset functionality and package dimensions.