CAT1022YI-28-GT3

Supervisors Overview

The CAT1022YI-28-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single-channel power supplies in microprocessor systems. It integrates an I2C serial 2k-bit CMOS EEPROM, a manual reset input, and a watchdog timer within an 8-TSSOP package. The device operates with a supply voltage range of 2.7 V to 5.5 V. Key electrical parameters include a threshold voltage of 2.8 V, an overvoltage threshold of 3 V, and an undervoltage threshold of 2.85 V. It features an active-low open-drain or open-collector reset output type and consumes 3 mA during operation.

Supervisors Feature Summary

• Integrates non-volatile 2k-bit EEPROM accessible via I2C interface for data storage alongside supervision functions
• Includes built-in watchdog timer to prevent system lockups from software errors
• Supports manual reset input for external control of the reset state

Supervisors Applications

• Microprocessor system power monitoring
• Embedded systems requiring non-volatile data retention
• Industrial control units needing watchdog protection

Supervisors Procurement Notes

Verify the specific suffix GT3 indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the I2C address configuration matches your system design requirements. Check for any recent product change notifications that might affect pinout or electrical characteristics.

Supervisors Selection Notes

Select this component when both voltage supervision and small-scale data storage are required in a single package. The TSSOP-8 package suits space-constrained designs. Verify that the 2.8 V threshold aligns with the monitored rail's nominal voltage. Consider the I2C interface compatibility with the host controller before finalizing the selection.

Supervisors Part Context

This part belongs to the CAT1022 series of supervisory circuits from onsemi. It combines power management IC supervision with memory capabilities. The series is designed for applications requiring reliable system reset and data preservation under varying power conditions. It falls under the PMIC - Power Management ICs subcategory.

Supervisors Replacement Considerations

Check for direct substitutes within the CAT1022 family with different voltage thresholds or packages. Verify pin-to-pin compatibility if replacing existing designs. Consult official cross-reference lists for confirmed equivalent parts.