MAX6778LT+T

Overview

The MAX6778LT+T is a low-power, 1%-accurate battery monitor designed for single-cell applications. 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 external inputs for rising and falling thresholds, enabling adjustable hysteresis to prevent output chatter caused by noise or voltage recovery. It supports alkaline, lithium-ion, NiCd, and NiMH battery types. Packaged in a compact UDFN-6 (1.0mm x 1.5mm) footprint, it functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides 1% accuracy for precise single-cell battery monitoring
• Features external threshold inputs for customizable hysteresis control
• Supports multiple battery chemistries including Li+, Alkaline, NiCd, and NiMH
• Offers flexible interface options with open-drain or push-pull outputs

Applications

• Monitoring single lithium-ion cells in portable electronics
• Battery management for multi-cell alkaline power sources
• NiCd and NiMH battery pack protection circuits
• Low-power embedded systems requiring accurate voltage tracking

Procurement Notes

Verify component authenticity through authorized distributors due to limited availability status. Confirm package integrity as the UDFN-6 form factor requires careful handling during assembly. Ensure compatibility with system voltage ranges between 1 V and 5.5 V before integration. Check for RoHS compliance documentation if required by specific regional regulations.

Selection Notes

Select this component when external hysteresis adjustment is necessary to mitigate noise-induced switching errors. Choose over fixed-hysteresis variants like the MAX6775/76 if system-specific threshold flexibility is required. Consider the UDFN-6 package for space-constrained designs where SC70-5 alternatives are insufficient. Verify that the 7 µA quiescent current aligns with strict power budget requirements.

Part Context

Part of the MAX6775–MAX6781 family of low-power battery monitors from Maxim Integrated. This series includes single-channel devices with fixed or adjustable hysteresis and dual-channel variants. The MAX6778 specifically distinguishes itself by offering external threshold inputs, unlike the factory-set versions, providing greater design flexibility for custom battery protection schemes.

Replacement Considerations

Consider MAX6775, MAX6776, or MAX6777 for similar functionality with fixed hysteresis settings. Evaluate MAX6779, MAX6780, or MAX6781 if dual-channel monitoring is needed instead of single-channel. Note that these substitutes may have different package options or output configurations.