UCC3921D/81143

Overview

The UCC3921D/81143 is a latchable negative floating hot swap power manager from Texas Instruments. Designed for single-channel general-purpose applications, it provides complete power management and fault handling capabilities. The device operates within a commercial temperature range of 0°C to 70°C and features a surface-mount 8-SOIC package. It supports a supply current of 1mA and is suitable for managing negative voltage rails in systems requiring controlled insertion and removal.

Feature Summary

• Provides complete power management and hot swap functionality for negative floating rails
• Features latchable fault handling capabilities for robust system protection
• Designed for single-channel general-purpose applications

Applications

• Negative voltage rail hot swap management
• System insertion and removal control
• Fault handling in power distribution networks

Procurement Notes

Verify the specific suffix (e.g., /81143) against the manufacturer's latest datasheet to confirm exact electrical characteristics and pinout compatibility. Ensure the operating environment remains within the specified commercial temperature range. Confirm that the negative floating architecture aligns with the target circuit design requirements before procurement.

Selection Notes

Select this component when managing negative voltage rails requiring controlled hot swap insertion. It is appropriate for systems needing latchable fault protection to prevent damage during power anomalies. Consider the 8-SOIC package constraints and commercial temperature limits. Verify compatibility with the specific negative voltage levels present in the application.

Part Context

This part belongs to the UCC3921 family of negative floating hot swap power managers. These devices are engineered to handle power management tasks where negative voltages are utilized. The family offers integrated solutions for controlling power delivery and managing faults in sensitive electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Texas Instruments directly for alternative recommendations or cross-reference with similar negative hot swap controllers if this specific part is unavailable.