MAX6367LKA44+T

Overview

The MAX6367LKA44+T is a low-power voltage supervisory circuit manufactured by Analog Devices / Maxim Integrated. It operates within a supply voltage range up to 5.5 V and features an active-low, push-pull output. The device monitors a single input with a threshold voltage of 4.4 V and an overvoltage threshold of 4.75 V. It includes a battery backup switch and chip enable functionality, while lacking manual reset or watchdog timer capabilities. The reset delay time is fixed at 280 ms. Operating current is 15 uA, with power dissipation rated at 700 mW. The component functions in temperatures from -40 C to +85 C and is housed in an SOT-23-8 package.

Feature Summary

• Integrates battery backup switching for seamless transition between primary and secondary power sources
• Includes chip enable gating to control device operation state
• Provides active-low push-pull output for direct logic interface compatibility

Applications

• Portable electronic devices requiring low quiescent current monitoring
• Battery-powered systems utilizing backup power switching
• Microprocessor reset circuits in consumer electronics

Procurement Notes

Verify the specific suffix 'LKA44' against official datasheets to confirm the 4.4 V threshold voltage. Confirm RoHS compliance status through manufacturer documentation. Check lifecycle status as distribution listings indicate potential discontinuation or limited availability. Ensure the SOT-23-8 package matches PCB footprint requirements before procurement.

Selection Notes

Select this component when a single-channel supervisor with battery backup and chip enable is required. Compare against MAX6368 series if adjustable thresholds are needed instead of fixed values. Verify that the 280 ms reset delay meets system timing constraints. Ensure the 5.5 V maximum operating voltage aligns with the target power rail specifications.

Part Context

This part belongs to the MAX6367L family of microprocessor supervisors designed for low-power applications. It shares the SOT-23-8 form factor with other Maxim Integrated supervisory ICs but differs in internal threshold settings and feature sets such as the inclusion of battery backup and chip enable gates unique to this variant.

Replacement Considerations

MAX6367LKA46+T offers similar features with a 4.6 V threshold. MAX6368LKA44+T provides adjustable overvoltage detection instead of fixed. Verify pinout compatibility and electrical parameters before substitution.