ADM825LYRJZ-R7

Supervisors Overview

The ADM825LYRJZ-R7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed for monitoring power supply integrity in electronic systems. It operates within a supply voltage range of 1 V to 5.5 V and features a precise under-voltage threshold of 4.63 V with an over-voltage threshold of 4.7 V. The device incorporates a built-in watchdog timer and provides a push-pull output type, ensuring reliable system reset capabilities. It includes a manual reset function and offers a fixed reset delay time of 280 ms. The component is housed in an SOT-23-5 package, suitable for surface mount installation, and supports operation across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Integrated watchdog timer functionality for automated fault detection
• Dual threshold monitoring for both under-voltage and over-voltage conditions
• Manual reset capability allowing external control of the reset state

Supervisors Applications

• Embedded system power management
• Microcontroller unit supervision
• Industrial control board protection

Supervisors Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the L variant corresponds to the 4.63 V threshold specification. Ensure compatibility with SOT-23-5 footprints during PCB layout. Check current availability status as distribution may vary by region. Validate RoHS compliance documentation for regulatory requirements.

Supervisors Selection Notes

Select this component when dual voltage monitoring with watchdog functionality is required. Consider the 4.63 V threshold against system operating voltages. Evaluate the 280 ms reset delay against processor startup times. Verify the SOT-23-5 package fits the mechanical constraints. Assess the -40°C to +125°C range against environmental conditions.

Supervisors Part Context

This part belongs to the ADM825 series of supervisory circuits from Analog Devices. It shares the family's core architecture but differs in threshold voltage and feature set compared to other variants like the ADM824 or ADM825TY. The series is characterized by low power consumption and compact packaging options for portable and industrial applications.

Supervisors Replacement Considerations

Direct substitutes include other ADM825 series variants with matching thresholds. Verify pinout compatibility before swapping. Check if alternative parts offer similar watchdog and manual reset features. Ensure thermal performance matches the original design requirements.