CAT803STBI-T3

Supervisors Overview

The CAT803STBI-T3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single power supply rails. It features an active-low open-drain output and operates within a maximum supply voltage of 5.5 V. The device provides a fixed reset delay time of 240 ms and includes an overvoltage threshold of 2.96 V. It supports threshold voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The component draws a typical operating supply current of 15 uA and dissipates up to 320 mW. It functions reliably across an extended temperature range from -40 C to +85 C.

Supervisors Feature Summary

• Provides active-low open-drain reset signal generation based on monitored input voltage levels.
• Features a fixed internal reset delay timer without requiring external components.
• Includes overvoltage detection capability to trigger reset under abnormal high-voltage conditions.

Supervisors Applications

• Microprocessor power supply supervision
• Battery-powered system voltage monitoring
• Embedded controller reset management

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance documentation matches specific manufacturing lot requirements. Check for alternative sourcing options as standard availability may be restricted. Ensure storage conditions adhere to moisture sensitivity level guidelines to maintain package integrity prior to assembly.

Supervisors Selection Notes

Select this component when a simple, low-power supervisor with open-drain output is required. Consider the 240 ms delay and 2.96 V overvoltage threshold against system timing requirements. Evaluate the 15 uA quiescent current impact on battery life. Compare against other CAT803 variants if different thresholds or output types are needed.

Supervisors Part Context

This part belongs to the CAT803 series of voltage supervisors from onsemi. It shares the SOT-23-3 package form factor with other members like CAT803TTBI-T3 but differs in specific electrical parameters such as overvoltage threshold. The series targets cost-sensitive applications requiring basic power monitoring functionality.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult manufacturer obsolescence notices for potential cross-reference recommendations.