MAX6775LTB+T

Overview

The MAX6775LTB+T is a low-power, single-cell battery monitor from the Maxim Integrated MAX6775 series. It provides 1%-accurate threshold detection for lithium-ion or multi-cell alkaline/NiCd/NiMH sources. The device features an open-drain low-battery output with fixed hysteresis to prevent chatter. It operates within a supply voltage range of 1V to 5.5V and draws only 3µA of quiescent current. The component is housed in a compact 6-pin µDFN package (1.0mm x 1.5mm) and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Provides 1% accurate low-battery threshold detection over the full operating temperature range.
• Features fixed hysteresis on the low-battery output to eliminate signal chatter caused by input noise or terminal recovery.
• Operates with ultra-low 3µA battery current consumption to extend system runtime.
• Guarantees valid logic state down to a minimum battery voltage of 1V.

Applications

• Monitoring single lithium-ion (Li+) cells in portable electronics
• Supervising multicell alkaline power sources
• Tracking NiCd and NiMH battery packs
• Low-power consumer devices requiring extended battery life

Procurement Notes

Verify the specific suffix 'LTB' against official Analog Devices documentation to confirm pinout and hysteresis configuration. Confirm package type matches the required 6-pin µDFN footprint. Check RoHS compliance status via manufacturer datasheets. Validate availability as distribution channels may list limited stock or obsolete status.

Selection Notes

Select this component when precise 1% accuracy is critical for battery management systems. Choose the MAX6775LTB+T variant specifically if the design requires the fixed hysteresis characteristics associated with the 'LTB' designation. Ensure the application voltage remains above 1V to maintain guaranteed logic states. Consider the small µDFN package constraints for PCB layout.

Part Context

This part belongs to the MAX6775–MAX6781 family of low-power battery monitors. While other variants offer dual outputs or adjustable hysteresis, the MAX6775 series focuses on single-output supervision. The MAX6775LTB+T utilizes the ultra-small 6-pin µDFN package, distinguishing it from SC70 versions.

FAQ

What is the function of the hysteresis feature in the MAX6775LTB+T?

The fixed hysteresis eliminates output chatter often associated with battery voltage monitors, typically caused by input-voltage noise or battery terminal voltage recovery after load removal.

What is the minimum operating voltage for valid logic states?

The device guarantees a valid low-battery-output logic state down to a battery voltage (VBATT) of 1V.