MAX6776LTA+T

Overview

The MAX6776LTA+T is a low-power, 1%-accurate battery monitor designed for single-cell lithium-ion or multi-cell alkaline/NiCd/NiMH power sources. It operates within a supply voltage range of 1 V to 5.5 V and draws only 7 µA of quiescent current. The device features a fixed low-battery output with resistor-adjustable hysteresis to eliminate output chatter caused by input noise or terminal voltage recovery. It is housed in an ultra-small µDFN package (1.0mm x 1.5mm) suitable for space-constrained portable applications.

Feature Summary

• Provides 1% accuracy for precise battery level monitoring
• Features adjustable hysteresis to prevent output chatter from noise or load removal
• Ultra-low power consumption of 7 µA extends battery life
• Supports single lithium-ion cells and multi-cell alkaline/NiCd/NiMH sources

Applications

• Single-cell lithium-ion battery monitoring
• Multi-cell alkaline battery packs
• NiCd and NiMH battery management systems
• Portable consumer electronics with limited board space

Procurement Notes

Verify the specific suffix 'LTA' against official Analog Devices documentation to confirm pinout and package configuration, as variations exist within the MAX6776 family. Confirm RoHS compliance status via the manufacturer's datasheet. Check current availability as distribution channels may list this component as limited stock or obsolete depending on the region and date.

Selection Notes

Select this component when high accuracy (1%) is required for single-supply battery monitoring in compact designs. It is suitable for applications needing low quiescent current to maximize standby time. Ensure the operating voltage range of 1 V to 5.5 V aligns with the system's power rails. Consider the µDFN package size if board real estate is critical compared to SC70 alternatives.

Part Context

The MAX6776LTA+T belongs to the MAX6775–MAX6781 series of low-power battery monitors from Maxim Integrated (now Analog Devices). This family offers both single and dual low-battery outputs in small packages. The MAX6776 specifically provides a single output channel, distinguishing it from dual-output variants like the MAX6779, while sharing the same core accuracy and low-power characteristics.

Replacement Considerations

Direct substitutes within the same accuracy class include MAX6775LTA+T and MAX6777LTA+T, which share identical pinouts and functionality but may differ in threshold voltages. Verify that any replacement maintains the 1% accuracy and 7 µA quiescent current specifications.