MAX6778XK+T

Overview

The MAX6778XK+T is a low-power, single-channel battery monitor featuring 1% accuracy. It operates within a voltage range of 0.9V to 5.5V and supports external threshold adjustment via dedicated rising and falling input pins. The device provides resistor-adjustable hysteresis to eliminate output chatter caused by noise or voltage recovery. It is available in push-pull or open-drain output configurations and functions reliably across an extended temperature range of -40°C to +125°C.

Feature Summary

• Single-channel monitoring with externally adjustable rising and falling thresholds
• Resistor-adjustable hysteresis prevents output chatter from input noise
• Flexible interface options with both open-drain and push-pull outputs

Applications

• Monitoring single lithium-ion (Li+) cells
• Monitoring multicell alkaline, NiCd, or NiMH power sources
• System power circuitry supervision
• Microprocessor power management interfaces

Procurement Notes

Verify the specific suffix 'XK' against official Analog Devices documentation to confirm pinout and output type compatibility. Confirm RoHS compliance status for the specific revision. Check current lifecycle status as Maxim Integrated products may have limited availability or obsolescence notices.

Selection Notes

Select this component when single-cell monitoring requires precise threshold control without internal factory-set limits. The adjustable hysteresis feature is critical for noisy environments. Ensure the external resistors selected for threshold setting align with the required trip points and that the output drive capability matches the downstream logic requirements.

Part Context

This part belongs to the MAX6775–MAX6781 family of low-power battery monitors. Unlike fixed-threshold variants, the MAX6778 specifically offers external inputs for threshold definition, providing design flexibility for various battery chemistries and system voltage profiles within the same package footprint.

Replacement Considerations

Direct substitutes include other MAX677x series devices such as MAX6775, MAX6776, or MAX6777, provided the fixed threshold values are acceptable. Verify package compatibility (SC70 or µDFN) and output configuration (open-drain vs. push-pull) before substitution.