MAX6439UTDHSD3

Overview

The MAX6439UTDHSD3 is an ultra-low-power single-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 supports multi-chemistry batteries including lithium-ion, alkaline, NiCd, and NiMH. The device provides a low-battery output to signal battery status and an active-low reset output for the microprocessor. It features a manual reset function via push-button and requires no external components. The component is housed in a surface-mount SOT-23-6 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates single-level battery monitoring with hysteresis and independent microprocessor reset supervision
• Supports multiple battery chemistries including lithium-ion, alkaline, NiCd, and NiMH without external components
• Provides manual reset capability through a dedicated push-button input

Applications

• Portable electronic devices such as smartphones and tablets
• Single-cell lithium-ion battery management systems
• Multicell alkaline or NiCd/NiMH battery applications

Procurement Notes

Verify the specific factory-trimmed threshold voltages associated with the DHHS suffix against the official datasheet before procurement. Confirm that the SOT-23-6 package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the manufacturer part number with Analog Devices documentation to confirm current production status and availability constraints.

Selection Notes

Select this component when a single low-battery threshold is sufficient for system power management. It is suitable for designs requiring integrated reset generation alongside battery monitoring. Consider the ultra-low-power consumption characteristics for battery-operated applications. Verify that the fixed threshold combinations provided by the DHHS variant align with the specific cutoff requirements of the target battery chemistry.

Part Context

This component belongs to the MAX6439–MAX6442 family of battery monitors from Maxim Integrated, now part of Analog Devices. These devices are designed to replace discrete monitoring solutions by integrating both battery level detection and processor reset functions into a single compact package. The family offers various threshold combinations to accommodate different battery types and system requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.