MAX6368LKA29-T

Overview

The MAX6368LKA29-T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single voltage input and provides a reset signal when the supply drops below a threshold of 2.94V. The device features an active-low, push-pull output and includes a battery backup switch for seamless power transition. It operates within a supply voltage range up to 5.5V and consumes only 15µA of quiescent current. The reset delay time is fixed at 280ms. The component is housed in an SOT-23-8 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates a battery backup switch to manage power transitions between primary and secondary sources
• Features chip-enable gating capability for controlled operation during sleep modes
• Provides active-low reset output with push-pull drive characteristics
• Operates with ultra-low quiescent current consumption suitable for battery-powered systems

Applications

• Portable electronic devices requiring reliable power monitoring
• Battery-operated equipment needing backup power switching
• Embedded systems utilizing low-power microprocessors
• Industrial control units operating in extended temperature environments

Procurement Notes

Verify the specific suffix designation carefully, as variations such as LKA29+T or LKA29 indicate different packaging or compliance statuses. Confirm availability status directly with authorized distributors, as this part may be subject to limited supply or obsolescence notices. Ensure the selected variant matches the required output polarity and package type for your design. Cross-reference the datasheet revision date to confirm parameter accuracy before finalizing procurement orders.

Selection Notes

Select this component when a single-channel voltage supervisor with integrated battery backup functionality is required. The active-low push-pull output suits direct interfacing with most microprocessor reset pins. Consider the 280ms reset timeout and 2.94V threshold against system startup requirements. The SOT-23-8 package offers space efficiency for compact designs. Verify that the 15µA current draw aligns with the overall power budget constraints of the application.

Part Context

This part belongs to the MAX6368 series of low-power uP supervisory circuits. The series typically includes variants with adjustable thresholds, different output polarities, and optional watchdog timers. The MAX6368 family is designed for applications demanding high reliability and minimal power consumption. Other members may feature manual reset inputs or open-drain outputs, distinguishing them from this specific push-pull configuration.

Replacement Considerations

Check for MAX6368LKA29+ or MAX6368LKA29TR as potential equivalents. Verify pin compatibility and electrical parameters against the original datasheet. Ensure any substitute maintains the same SOT-23-8 footprint and functional specifications.