MAX6434UK+T

Overview

The MAX6434UK+T is a single-channel battery monitor from the MAX6427–MAX6438 family, designed for low-power voltage supervision. It operates within a supply voltage range of 1.0V to 5.5V and features an adjustable threshold voltage. The device utilizes a SOT-23-5 surface-mount package and supports an operating temperature range from -40°C to +85°C. It provides a low-battery output indicator with internal hysteresis to detect weak or empty battery conditions in single-cell lithium-ion or multicell alkaline/NiCd/NiMH power supplies.

Feature Summary

• Provides low-battery output indication for three distinct battery states: good, weak, and empty.
• Features internal hysteresis to prevent output oscillation during threshold transitions.
• Supports monitoring of single lithium-ion cells and various multicell battery chemistries.

Applications

• Single lithium-ion (Li+) cell monitoring
• Multicell alkaline power supply supervision
• NiCd/NiMH battery pack management

Procurement Notes

Verify the specific suffix 'UK' against the manufacturer's official datasheet to confirm the exact threshold voltage setting, as this variant determines the fixed trip point. Confirm RoHS compliance status and lead times directly with Analog Devices or authorized distributors, as availability may vary by region and production lot.

Selection Notes

Select this component when a fixed threshold voltage is required for simple battery depletion detection without external programming components. Ensure the chosen threshold aligns with the minimum operational voltage of the load. Consider the MAX6435 or MAX6436 if dual-level monitoring or different threshold configurations are needed for more complex power management strategies.

Part Context

This part belongs to the MAX6427–MAX6438 series of low-power, single/dual-voltage battery monitors. These devices are engineered to replace discrete comparator circuits, offering integrated precision references and hysteresis. The UK suffix typically denotes a specific factory-set threshold voltage within the adjustable range of the family, simplifying design implementation for standard battery voltages.

Replacement Considerations

Check for MAX6434UK+TDKR or other tape-and-reel variants of the same electrical specification. Verify compatibility with MAX6435 or MAX6436 if dual-output functionality is acceptable, though pinouts and functions differ.