CAT823LTDI-GT3

Supervisors Overview

The CAT823LTDI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor system power integrity. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed overvoltage threshold of 4.63 V. The device utilizes a TSOT-23-5 surface-mount package and supports manual reset functionality. It includes an integrated watchdog timer for enhanced system reliability. The component is rated for industrial temperature ranges from -40°C to +85°C and consumes a typical operating current of 4 µA.

Supervisors Feature Summary

• Fixed overvoltage detection at 4.63 V with active low push-pull output
• Integrated manual reset input and watchdog timer for fault management
• Low quiescent current consumption of 4 µA for energy efficiency
• Compact TSOT-23-5 SMD package suitable for space-constrained designs

Supervisors Applications

• Portable electronic devices requiring battery voltage monitoring
• Industrial control systems needing reliable power supervision
• Embedded microcontroller circuits with watchdog requirements
• Consumer electronics utilizing low-power voltage regulation

Supervisors Procurement Notes

Verify the specific suffix 'LTDI' against the official onsemi datasheet to confirm the 4.63 V threshold variant. Confirm RoHS compliance status through the manufacturer's certification documents. Check end-of-life notifications as some CAT823 variants have reached obsolescence. Ensure the TSOT-23-5 package matches your PCB footprint requirements before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed high-voltage threshold is required rather than adjustable options. The 4.63 V limit suits 5 V nominal systems. Consider the manual reset feature if external user intervention is needed. The low current draw makes it suitable for battery-operated applications. Verify that the watchdog timeout meets the system's timing constraints compared to other CAT823 variants.

Supervisors Part Context

This part belongs to the CAT823 series of supervisory circuits from onsemi. The series offers various threshold voltages and package options. The LTDI suffix indicates a specific overvoltage threshold and package type. These components are part of onsemi's standard product portfolio, often leveraging the Treo platform for manufacturing consistency and long-term availability in industrial and consumer markets.

Supervisors Replacement Considerations

CAT823RTDI-GT3: Features a 2.63 V threshold instead of 4.63 V. CAT823SSDI-GT3: Different threshold specification; verify exact voltage rating. CAT823TTDI-GT3: Offers multiple threshold options including 3.08 V, 3.3 V, and 5 V. Ensure any substitute matches the 4.63 V overvoltage requirement precisely.