UCC3918DPG4

Overview

The UCC3918DPG4 is a low on-resistance hot swap power manager manufactured by Texas Instruments. It is designed for positive voltage applications and features a surface-mount SOIC-16 package. The device operates within a supply voltage range of 12V to 17V, with a maximum DC supply voltage of 17.0V. It supports a regulated output voltage of 5.50 V and includes an internal oscillator with a switching frequency range of 6kHz to 220kHz. The component functions as a power management IC for controlled insertion and removal of live circuits.

Feature Summary

• Provides low on-resistance current limiting for efficient power delivery during hot swap operations
• Integrates programmable soft-start control to manage inrush currents during board insertion
• Includes built-in overvoltage protection to safeguard downstream loads from input transients

Applications

• Positive voltage hot swap power management systems
• Telecommunications equipment requiring live board insertion
• Industrial control modules with modular power architectures

Procurement Notes

Verify the specific suffix 'PG4' indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the SOIC-16 package dimensions match your PCB footprint requirements. Ensure the operating temperature range of 0°C to +70°C aligns with your system's thermal environment. Cross-reference the datasheet revision date to confirm pinout consistency with existing designs.

Selection Notes

Select this component when a dedicated hot swap controller with low conduction loss is required for positive voltage rails. It is suitable for applications needing precise inrush current control without external discrete MOSFET drivers. Consider the SOIC-16 package size relative to available board space. Evaluate the 12V to 17V supply range against your system's nominal voltage levels to ensure proper operation.

Part Context

This part belongs to the UCC3918 family of hot swap power managers from Texas Instruments. It serves as a specialized solution for managing power distribution in modular systems where components must be inserted or removed while powered. The device integrates necessary protection logic into a compact form factor, simplifying design compared to discrete implementations.

Replacement Considerations

Public confirmed substitute: UCC3918DP.