MAX6368LKA26+T

Overview

The MAX6368LKA26+T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.6V to 5.5V and features an adjustable reset threshold voltage with a specific factory-set value of 2.63V for this suffix. The device provides a push-pull active-low reset output and includes a chip-enable input for power management. It incorporates battery backup switching functionality and offers a fixed reset delay time of 280ms. The component consumes only 15µA of supply current and is housed in an SOT-23-8 surface-mount package, suitable for operation between -40°C and +85°C.

Feature Summary

• Integrates battery backup switching to maintain system state during primary power loss
• Includes chip-enable gating to reduce power consumption when the system is inactive
• Provides a push-pull active-low reset output for reliable logic interfacing

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing automatic power-fail detection
• Battery-operated equipment with critical data retention requirements

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation to ensure correct threshold voltage and package configuration. Confirm availability status as distribution channels may list limited or obsolete stock. Cross-reference RoHS compliance details directly with the datasheet before integration into production designs.

Selection Notes

Select this component when a low quiescent current supervisor with integrated battery backup is required. The adjustable threshold allows customization for various rail voltages, while the chip-enable feature supports aggressive power-down modes. Ensure the SOT-23-8 footprint matches the PCB layout constraints and that the 280ms timeout meets system startup timing requirements.

Part Context

This part belongs to the MAX6368 series of uP supervisors designed for low-voltage applications. The 'LKA' suffix indicates the specific pinout, threshold setting, and package type within the broader family. These circuits are engineered to monitor single-supply voltages and provide robust reset signals for microprocessors and memory devices in space-constrained environments.

Replacement Considerations

Consult the official MAX6368 datasheet for confirmed substitute part numbers within the same series. Verify compatibility regarding threshold voltage accuracy, output drive capability, and package dimensions before substituting.