CAT1027WI-28-GT3

Supervisors Overview

The CAT1027WI-28-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features a fixed under-voltage threshold of 2.85 V. The device integrates a watchdog timer and manual reset functionality with an open collector/drain output type. It is housed in an SOIC-8 package and supports surface mount installation. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system stability monitoring
• Supports manual reset input for user-initiated control
• Features open collector or drain output configuration

Supervisors Applications

• CPU power supply supervision
• Embedded system reset management
• Industrial control unit monitoring

Supervisors Procurement Notes

Verify the specific suffix GT3 against official datasheets to confirm tape-and-reel packaging specifications. Confirm that the 28 code corresponds to the 2.85 V threshold variant. Check current lifecycle status as distribution data indicates potential discontinuation or limited availability for this specific part number.

Supervisors Selection Notes

Select this component when a combined supervisor and watchdog function is required in a standard SOIC-8 footprint. Ensure the 2.85 V threshold aligns with the target system's minimum operating voltage. Verify compatibility with the microcontroller's reset input requirements regarding active levels and drive capability.

Supervisors Part Context

This part belongs to the CAT1027 series of supervisory circuits. It shares functional similarities with other CAT102x variants but is distinguished by its integrated watchdog timer and specific threshold voltage. The series is categorized under PMIC supervisory ICs within the manufacturer's portfolio.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with CAT1027 family members such as CAT1027WI-28-G for pin-compatible alternatives if sourcing constraints exist.