MAX16021LTEY+

Supervisors Overview

The MAX16021LTEY+ is a low-power supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It integrates voltage monitoring, manual reset control, and battery backup switching in a single package. The device operates within a supply voltage range of 1.53 V to 5.5 V and features a watchdog timer with a fixed timeout period. It provides configurable output states including active high, active low, and push-pull configurations. The component is housed in a 16-pin TQFN-EP package suitable for surface-mount applications.

Supervisors Feature Summary

• Integrates power-fail detection with programmable under-voltage and over-voltage thresholds for comprehensive system monitoring.
• Includes a built-in watchdog timer to detect software malfunctions and trigger automatic system resets.
• Features an integrated battery backup switch that seamlessly transitions power sources during main supply failures.

Supervisors Applications

• Portable electronic devices requiring extended battery life and reliable power management
• Embedded systems needing automated recovery from software lockups via watchdog functionality
• Data storage circuits requiring uninterrupted operation during primary power loss

Supervisors Procurement Notes

Verify the specific suffix LTEY against official datasheets to confirm pinout and thermal pad configuration. Confirm RoHS compliance status through manufacturer documentation. Check current lifecycle status as components may be subject to discontinuation notices. Ensure compatibility with existing PCB footprints before procurement.

Supervisors Selection Notes

Select this component when a combined solution for voltage supervision, watchdog timing, and battery switchover is required. Evaluate the quiescent current specifications against strict power budget constraints. Verify that the available threshold voltages align with the monitored rail requirements. Consider the TQFN package size relative to board space limitations.

Supervisors Part Context

This part belongs to the Maxim Integrated MAX16021 family of supervisory circuits. The series is designed for applications demanding low standby current and minimal external component count. These devices are commonly used in consumer electronics and industrial equipment where system reliability and power efficiency are critical design parameters.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the original pinout and electrical characteristics. Verify package compatibility to avoid PCB redesign efforts.