CAT1022WI-25-T3

Supervisors Overview

The CAT1022WI-25-T3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features a threshold voltage of 2.5 V with an overvoltage threshold of 2.7 V. The device includes a manual reset function and a watchdog timer. It is housed in an SOIC-8 surface-mount package and supports industrial operating temperatures from -40°C to +85°C. The typical operating supply current is 3 mA, and the maximum power dissipation is 1 W.

Supervisors Feature Summary

• Integrates voltage supervision with a built-in watchdog timer for system reliability
• Supports manual reset functionality via dedicated input pin
• Operates across extended industrial temperature ranges

Supervisors Applications

• CPU voltage monitoring in embedded systems
• Industrial control unit power supervision
• Watchdog timer implementation in microcontroller circuits

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Ensure storage conditions align with moisture sensitivity level specifications to maintain device integrity during handling and assembly processes.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and watchdog timer solution is required for single-input monitoring. The 2.5 V threshold suits 3.3 V logic systems requiring precise under-voltage detection. Verify that the SOIC-8 package fits the PCB layout constraints and that the 3 mA quiescent current meets the system's power budget requirements.

Supervisors Part Context

This part belongs to the CAT1022 series of supervisory circuits from onsemi. The series provides integrated solutions for monitoring power rails and resetting processors. The 'W' suffix typically indicates the SOIC-8 package variant, while 'I' denotes the industrial temperature grade. This specific model combines supervision with watchdog capabilities, distinguishing it from basic reset-only variants.

Supervisors Replacement Considerations

Direct substitutes include other CAT1022 variants with matching 2.5 V thresholds and watchdog features, such as CAT1022YI-25-GT3 (TSSOP-8) or CAT1022ZI-25-T3 (MSOP-8), provided package compatibility is addressed. Cross-reference datasheets for exact electrical parameter alignment.