CAT1027LI-45-G

Supervisors Overview

The CAT1027LI-45-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features a fixed threshold voltage of 4.5 V. The device integrates a watchdog timer and provides brown-out protection without manual reset functionality. It is housed in an SOIC-8 surface-mount package and supports industrial temperature operation from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system reliability
• Provides brown-out protection with a fixed 4.5 V threshold
• Includes 2K bit serial EEPROM memory

Supervisors Applications

• CPU power supply monitoring
• Microcontroller system supervision
• Brown-out detection circuits

Supervisors Procurement Notes

Verify the specific suffix 'LI' against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status through current manufacturer documentation. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 4.5 V threshold is required for systems operating between 2.7 V and 5.5 V. Ensure the SOIC-8 package fits the PCB layout constraints. Verify that the integrated watchdog timer meets the system's timing requirements without needing external components.

Supervisors Part Context

This part belongs to the CAT1027 series of supervisory circuits which combine voltage monitoring with non-volatile memory. It is intended for embedded systems requiring both power management and data storage capabilities in a compact form factor.

Supervisors Replacement Considerations

Check for CAT1027LI-45-GT3 as a potential reel-packaged alternative if available. Verify pin compatibility and electrical specifications before substituting with other CAT102x series variants.