CAT1022LI-45-G

Supervisors Overview

The CAT1022LI-45-G is a supervisory circuit integrating an I2C serial 2k-bit CMOS EEPROM, manual reset capability, and a watchdog timer. It operates within a supply voltage range of 2.7 V to 5.5 V. The device features a 4.5 V under-voltage threshold and a 4.75 V over-voltage threshold for power monitoring. It supports manual reset input and includes a built-in watchdog timer for system reliability. The component is available in an 8-pin DIP package and functions across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Integrates I2C serial EEPROM with manual reset and watchdog timer
• Monitors single input with defined under-voltage and over-voltage thresholds
• Supports operation across extended industrial temperature ranges

Supervisors Applications

• Power supply management systems
• Industrial control circuits
• Automotive electronics requiring extended temperature stability

Supervisors Procurement Notes

Verify the specific suffix 'LI' indicates the 8-pin DIP package configuration distinct from SOIC variants. Confirm the '45' designation matches the required 4.5V threshold for your application. Check current lifecycle status as some related parts may be discontinued or subject to PCN updates regarding barcoding. Ensure compatibility with existing PCB footprints designed for through-hole mounting.

Supervisors Selection Notes

Select this part when an integrated solution combining memory, supervision, and reset functions is required. The 8-pin DIP package suits prototyping or applications where surface-mount space is not constrained. Verify that the I2C interface speed and address requirements align with the host microcontroller. Consider the extended temperature rating if operating in harsh environments compared to commercial grade alternatives.

Supervisors Part Context

This component belongs to the CAT1022 series of supervisory circuits by onsemi (formerly Catalyst Semiconductor). The series combines power management monitoring with non-volatile storage capabilities. The LI suffix specifically denotes the leaded DIP package option, differentiating it from surface-mount versions like the SE or WI series within the same functional family.

Supervisors Replacement Considerations

CAT1022SE-45-TE13 offers identical electrical specifications but utilizes an SOIC-8 surface-mount package instead of the DIP form factor. CAT1022WI-45-G provides similar functionality in a wide-body SOIC package. Verify pinout compatibility and thermal dissipation requirements when substituting between package types.