CAT803LTBGI-T3

Supervisors Overview

The CAT803LTBGI-T3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring microprocessor power supplies. It operates within a supply voltage range up to 5.5 V and features an active low, open-drain output. The device provides a fixed reset delay time of 240 ms and includes overvoltage detection at a threshold of 4.7 V. It is available in a SOT-23-3 surface-mount package and supports multiple threshold voltages including 2.5 V, 3 V, 3.3 V, and 5 V. The component functions with a maximum operating temperature of +85 °C and a minimum of -40 °C.

Supervisors Feature Summary

• Provides active low open-drain output signaling for power supply supervision
• Includes dedicated overvoltage detection capability
• Features a fixed reset delay timer for stable system initialization

Supervisors Applications

• Microprocessor power supply monitoring
• Embedded system voltage supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct threshold voltage selection. Confirm RoHS compliance status through manufacturer documentation prior to integration. Check current lifecycle status as availability may vary by region. Ensure package compatibility with existing PCB footprints during procurement planning.

Supervisors Selection Notes

Select this component when a simple, single-input voltage supervisor with overvoltage protection is required. The fixed 240 ms delay suits applications where immediate reset upon undervoltage is not critical. Verify that the open-drain output interface matches the receiving logic gate requirements. Consider the SOT-23-3 package size constraints relative to board space limitations.

Supervisors Part Context

This part belongs to the CAT803 series of 3-pin microprocessor power supply supervisors from onsemi. The series offers various threshold options to accommodate different standard voltage rails. The LTBI-T3 suffix indicates specific pinout and packaging characteristics consistent with the broader family design.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic equivalents may lack the specific overvoltage detection feature or exact delay timing.