MAX6775XKB+T

Overview

The MAX6775XKB+T is a low-power, single-cell battery monitor from the MAX6775 series, manufactured by Analog Devices Inc./Maxim Integrated. It provides 1% accurate threshold detection for monitoring single lithium-ion cells or multi-cell alkaline/NiCd/NiMH power sources. The device operates within a supply voltage range of 1.2V to 5.5V and consumes only 3µA of battery current. It features an open-drain or push-pull low-battery output with fixed or adjustable hysteresis to prevent output chatter. The component is housed in a compact 5-pin SC-70 package and is fully specified for operation from -40°C to +85°C.

Feature Summary

• Provides 1%-accurate threshold specification over temperature for reliable battery level detection
• Features low 3µA battery current consumption suitable for portable applications
• Includes fixed or resistor-adjustable hysteresis to eliminate output chatter caused by noise or voltage recovery
• Guarantees valid low-battery-output logic state down to VBATT = 1V

Applications

• Monitoring single lithium-ion (Li+) cells
• Monitoring multi-cell alkaline power sources
• Monitoring multi-cell NiCd/NiMH power sources

Procurement Notes

Verify the specific suffix 'XKB' against the official datasheet to confirm the exact threshold voltage and hysteresis configuration, as these parameters vary across the MAX6775 family. Confirm RoHS compliance status and check for obsolescence notices, as older Maxim parts may have limited availability or be designated as not recommended for new designs. Ensure the SC-70-5 package footprint matches your PCB design constraints.

Selection Notes

Select this component when high accuracy (1%) is required for single-cell battery management in space-constrained designs. It is suitable for applications needing low quiescent current to extend battery life. Consider the MAX6775 series variants if dual outputs are needed, or other packages like µDFN if smaller footprints are preferred. Verify that the input leakage current characteristics meet the requirements for any external resistor networks used for hysteresis adjustment.

Part Context

The MAX6775XKB+T belongs to the MAX6775–MAX6781 family of low-power battery monitors. This family offers both single and dual low-battery output options in ultra-small packages. The series is designed to provide robust battery monitoring with immunity to short battery transients and low input leakage current, allowing the use of large resistors in hysteresis circuits.

Replacement Considerations

Direct substitutes within the same family include MAX6775XKA+T and MAX6775XKC+T, which share the same package and general functionality but differ in threshold voltage settings. Verify the specific trip point requirements before substituting.