UCC3913D

Overview

The UCC3913D is a negative voltage hot swap power manager manufactured by Texas Instruments. It operates within a supply voltage range of 5 V to 35 V and supports single-channel control for commercial temperature applications ranging from 0°C to +70°C. The device utilizes an SOIC-18 surface-mount package. Key electrical characteristics include a maximum operating supply current of 20 mA. It integrates precision analog circuitry for monitoring and protection functions in high-density server and communication systems requiring negative rail management.

Feature Summary

• Integrates precision analog controllers for accurate voltage and current monitoring
• Provides comprehensive protection against overvoltage, undervoltage, and short-circuit conditions
• Supports sequential power-up and controlled ramp-down for safe module insertion and removal

Applications

• Negative voltage bus powering in telecommunications infrastructure
• Hot-swap controller modules for server backplanes
• High-density power distribution units requiring precise fault management

Procurement Notes

Verify the specific suffix (e.g., D vs. DTR) to confirm the packaging type, as the base part number may correspond to tube or reel configurations. Confirm that the negative voltage requirement aligns with your system architecture, as this component is designed exclusively for negative rail applications. Ensure the SOIC-18 footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when managing negative voltage rails in hot-swap environments. It is suitable for applications requiring integrated fault protection without external discrete components. Compare against the UC3914 series if positive voltage support is needed instead. Verify that the 20 mA supply current fits within your available quiescent power budget for the specific node.

Part Context

This device belongs to the UCC39xx family of hot swap controllers, which are specialized PMICs for modular systems. These controllers manage the insertion and removal of live cards while protecting the main bus from transients. The UCC3913 variant specifically addresses negative voltage architectures common in legacy and specialized telecom equipment.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer cross-reference guides for potential equivalents.