CAT140029SWI-GT3

Supervisors Overview

The CAT140029SWI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor system power rails. It integrates a precision voltage detector with a 2-kbit I2C serial CMOS EEPROM. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports threshold voltages of 2.5 V, 3 V, 3.3 V, and 5 V. Key electrical parameters include an overvoltage threshold of 2.96 V and an undervoltage threshold of 2.89 V. It functions in a single-input configuration without manual reset or watchdog timer capabilities. The component is housed in an SOIC-8 package and maintains operation between -40°C and +85°C.

Supervisors Feature Summary

• Integrates a voltage supervisor with brown-out protection and a 2-kbit I2C serial EEPROM for data retention during power events.
• Provides active reset signals when monitored supply voltages exceed specified tolerance levels to protect microcontrollers and peripherals.
• Supports multiple standard system voltage thresholds including 2.5 V, 3 V, 3.3 V, and 5 V configurations.

Supervisors Applications

• Microcontroller-based systems requiring power monitoring and non-volatile data storage
• ASIC peripheral protection against out-of-tolerance power supply conditions
• Embedded devices needing brown-out detection and configuration data retention

Supervisors Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm exact pinout and electrical characteristics. Ensure compatibility with I2C bus requirements and operating temperature ranges for the target application environment. Cross-reference official datasheets for any revisions or obsolescence notices before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when both voltage supervision and small-scale non-volatile memory are required in a single package. Consider the I2C interface compatibility and available threshold options relative to the system's power rail specifications. Evaluate the SOIC-8 footprint constraints and thermal performance within the designated operating temperature range.

Supervisors Part Context

This part belongs to the CAT14002 series, which combines supervisory circuits with serial EEPROMs. It serves as a solution for systems needing integrated power management and data storage. The device simplifies board design by reducing component count compared to using separate supervisor and memory ICs.

Supervisors Replacement Considerations

Check for direct substitutes within the CAT14002 family or other onsemi voltage supervisors with integrated I2C EEPROM. Verify equivalent threshold voltages, package dimensions, and interface protocols before substitution.