MAX6781LTC+

Overview

The MAX6781LTC+ is a low-power, dual-channel battery monitor from the Analog Devices Maxim Integrated MAX6775–MAX6781 family. Designed for monitoring single lithium-ion cells or multi-cell alkaline, NiCd, and NiMH power sources, it features two independent low-battery outputs with factory-set hysteresis options of 0.5%, 5%, or 10%. The device operates within a supply voltage range of 1V to 5.5V and is specified over an industrial temperature range of -40°C to +85°C. It is housed in a compact 6-pin µDFN package measuring 1.0mm x 1.5mm.

Feature Summary

• Dual-channel architecture providing independent low-battery detection for multiple power sources
• Factory-set hysteresis options eliminate output chatter caused by input noise or voltage recovery
• Ultra-small footprint suitable for space-constrained portable electronic designs

Applications

• Monitoring single lithium-ion battery cells
• Monitoring multi-cell alkaline power sources
• Monitoring multi-cell nickel cadmium (NiCd) batteries
• Monitoring multi-cell nickel metal hydride (NiMH) batteries

Procurement Notes

Verify component authenticity through authorized channels due to limited availability status. Confirm specific suffix variations regarding hysteresis settings against official datasheets. Check current lifecycle status as the product may be discontinued or subject to restricted supply conditions.

Selection Notes

Select this model when dual independent battery monitoring is required within a minimal package size. Ensure the application utilizes compatible battery chemistries such as Li+, alkaline, NiCd, or NiMH. Verify that the fixed hysteresis options meet system noise immunity requirements without needing external adjustment circuitry.

Part Context

This component belongs to the MAX6775–MAX6781 series of low-power battery monitors. The series offers single and dual channel variants in µDFN and SC70 packages. The MAX6781 specifically provides dual outputs, distinguishing it from single-channel models like the MAX6778 while sharing similar low-power characteristics and package dimensions.

Replacement Considerations

Compatible substitutes include other dual-channel variants within the same family, such as the MAX6779 and MAX6780. These alternatives offer identical package footprints and functional capabilities but may differ in specific hysteresis configurations or output drive types.