CAT1163WI45

Supervisors Overview

The CAT1163WI-45 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a 16K EEPROM for data storage alongside its supervision functions. The device operates within a supply voltage range of 2.7 V to 6 V and features a threshold voltage of 4.5 V with an overvoltage threshold of 4.75 V. It includes a manual reset input, a watchdog timer, and provides active high, active low, or open drain outputs. The reset delay time is specified at 270 ms, and the component supports surface mount installation in an SOIC-8 package.

Supervisors Feature Summary

• Integrates 16K EEPROM memory for non-volatile data storage within the supervisory circuit
• Includes a built-in watchdog timer for system reliability monitoring
• Supports manual reset functionality via dedicated input pin
• Offers flexible output configurations including active high, active low, and open drain options

Supervisors Applications

• CPU power supply monitoring systems
• Embedded controller reset circuits
• Data logging applications requiring integrated memory
• Industrial control board supervision

Supervisors Procurement Notes

Verify the exact suffix (e.g., -GT3) as the base model number may refer to multiple packaging variants. Confirm RoHS compliance status and lead times through authorized distributors, as availability varies by region. Ensure the specific voltage threshold matches the target application requirements before ordering.

Supervisors Selection Notes

Select this component when both voltage supervision and small-scale data storage are required in a single package. Compare the 4.5 V threshold against the system's nominal operating voltage to ensure proper triggering. Consider the SOIC-8 footprint constraints and verify that the 270 ms reset delay aligns with the microcontroller startup timing requirements.

Supervisors Part Context

This part belongs to the CAT1163 series of supervisory circuits from onsemi, which combines power management IC functions with memory capabilities. The series is categorized under PMIC solutions and is designed to simplify system design by reducing component count. It serves as a specialized solution for embedded systems needing reliable reset generation and data retention.

Supervisors Replacement Considerations

Check for direct substitutes within the CAT1163 family with different voltage thresholds if the 4.5 V setting is unsuitable. Verify pin compatibility with alternative packages such as SOIC-Wide-8 if space allows. Consult official substitution guides for any discontinued variants.