CAT1162WI-28-G

Supervisors Overview

The CAT1162WI-28-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a 16K I2C serial EEPROM with hardware write protection and a power supply supervisor featuring brown-out protection. The device operates within a supply voltage range of 2.7 V to 6 V, with a specific threshold voltage of 2.8 V. It provides a reset delay time of 270 ms and supports manual reset functionality. The component utilizes an SOIC-8 surface-mount package and includes active high, active low, and open drain output types. It lacks a watchdog timer and battery backup switch, operating across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates 16K I2C serial EEPROM with hardware memory write protection
• Provides system power supervision with brown-out protection capabilities
• Supports multiple output configurations including active high, active low, and open drain

Supervisors Applications

• Microcontroller-based system monitoring
• CPU power supply supervision
• Data storage in embedded systems via integrated EEPROM

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and lead times prior to procurement planning. Ensure the specific suffix matches design requirements as variants may differ in packaging or electrical characteristics. Cross-reference datasheet revisions to confirm current manufacturing status and end-of-life notifications.

Supervisors Selection Notes

Select this component when both voltage supervision and non-volatile data storage are required in a single package. The absence of a watchdog timer distinguishes it from the CAT1161 series; choose accordingly if system hang protection is needed. Verify that the 2.8 V threshold aligns with the target system's minimum operating voltage. Ensure the SOIC-8 footprint fits the PCB layout constraints.

Supervisors Part Context

This part belongs to the CAT116x family of supervisory circuits which combine memory and reset functions. It is distinct from the CAT1161 variant which includes a watchdog timer. The WI suffix indicates a wide temperature range and SOIC-8 packaging. It serves as a consolidated solution for microcontrollers requiring both system integrity monitoring and persistent data retention without external components.

Supervisors Replacement Considerations

CAT1161WI-28-G offers identical features plus an integrated watchdog timer. CAT1162PI-45 provides similar supervision but in a PDIP-8 package with a different threshold voltage.