CAT803RSDI-GT3

Supervisors Overview

The CAT803RSDI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single power supply rails. It operates within a maximum supply voltage of 5.5 V and features an active low, open-drain output. The device provides a fixed reset delay time of 240 ms to ensure stable system initialization. It supports threshold voltages including 2.5 V, 3 V, 3.3 V, and 5 V, with a specific overvoltage threshold of 4.7 V for this variant. The component consumes 20 uA of operating current and functions reliably across an industrial temperature range from -40 C to +85 C. It is housed in a compact SC-70-3 surface-mount package.

Supervisors Feature Summary

• Provides reliable voltage supervision with an active low open-drain output for direct interface with digital logic.
• Ensures system stability through a fixed 240 ms reset delay time during power-up sequences.
• Optimized for low-power applications with minimal operating current consumption.

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Industrial control systems operating in harsh environments
• Consumer electronics utilizing standard voltage rails

Supervisors Procurement Notes

Verify the exact suffix and manufacturer documentation before integration, as the CAT803 series contains multiple variants with distinct electrical characteristics. Confirm that the specific overvoltage threshold and threshold voltage align with the target design requirements. Note that availability status may vary, and lead times should be checked directly with authorized distributors or the manufacturer for current stock levels.

Supervisors Selection Notes

Select this component when a simple, low-cost supervisor is needed for a single voltage rail without manual reset or watchdog functionality. Ensure the required threshold voltage matches one of the available options (2.5 V, 3 V, 3.3 V, or 5 V). Consider the SC-70-3 package size constraints and the open-drain output requirement for pull-up resistor implementation in the final circuit design.

Supervisors Part Context

This part belongs to the CAT803 series of voltage supervisors from onsemi, which are designed for general-purpose power management. The series offers various threshold voltages and packages to suit different application needs. The CAT803RSDI-GT3 specifically utilizes the SC-70-3 package, providing a small footprint suitable for space-constrained designs while maintaining robust performance in industrial temperature ranges.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided source material. Verify compatibility with alternative supervisors based on matching threshold voltages, output types, and package dimensions.