CAT1320WI-28

Supervisors Overview

The CAT1320WI-28 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 3 V to 5.5 V and features a threshold voltage of 2.8 V. The device includes manual reset functionality but lacks a watchdog timer. It supports one monitored input and has an overvoltage threshold of 3 V with an undervoltage threshold of 2.85 V. The component draws 3 mA of operating current and dissipates up to 1 W of power. It functions reliably between -40°C and +85°C and is housed in an SOIC-8 package.

Supervisors Feature Summary

• Provides precise voltage supervision for microcontroller systems with manual reset capability
• Integrates brown-out protection to ensure valid reset signals at low voltages
• Utilizes low-power CMOS technology for efficient operation in embedded environments

Supervisors Applications

• CPU system monitoring
• Microcontroller-based power management
• Brown-out protection circuits

Supervisors Procurement Notes

Verify the specific suffix 'G' for lead-free compliance when ordering. Confirm availability status as manufacturing schedules may vary. Ensure the SOIC-8 package matches your PCB footprint requirements. Cross-reference the 2.8 V threshold against your system's nominal voltage levels to guarantee proper supervision timing. Check for any recent product change notifications regarding packaging or material composition updates.

Supervisors Selection Notes

Select this component when a dedicated voltage supervisor with manual reset is required without watchdog complexity. The 2.8 V threshold suits 3 V logic systems. Consider the SOIC-8 package for surface-mount assembly constraints. Evaluate the 3 mA quiescent current against total system power budgets. Verify that the absence of a watchdog timer aligns with the application's fault recovery strategy.

Supervisors Part Context

This part belongs to the CAT1320 series of supervisory circuits from onsemi. The series focuses on simple, reliable voltage monitoring solutions. Unlike variants with integrated EEPROM or watchdog timers, this model provides core supervision functions. It complements other PMIC offerings by addressing basic reset generation needs in compact packages.

Supervisors Replacement Considerations

Check for CAT1320WI-25-T3 if a 2.5 V threshold is acceptable. Verify pin compatibility with existing designs before substituting. Ensure the replacement maintains the same SOIC-8 footprint and manual reset functionality.