UCC3919PWG4

Overview

The UCC3919PWG4 is a hot swap controller manufactured by Texas Instruments, designed for general-purpose applications. It operates within a supply voltage range of 3V to 8V and features an internal current consumption of 1 mA. The device supports programmable characteristics including automatic retry, circuit breaker functionality, current limiting, fault timeout, and latch-up fault protection. It incorporates Under Voltage Lockout (UVLO) for reliable operation. The component is housed in a 16-TSSOP package with a width of 0.173 inches (4.40 mm), suitable for surface mount installation.

Feature Summary

• Integrates comprehensive protection mechanisms such as current limiting and fault timeout
• Supports automatic retry logic for transient fault recovery
• Includes Under Voltage Lockout (UVLO) for stable startup conditions

Applications

• General-purpose hot swap controller circuits
• PCI/PCI-X backplane systems requiring safe insertion
• Industrial equipment with modular board replacement needs

Procurement Notes

Verify the exact suffix 'G4' against the manufacturer's official documentation to confirm RoHS compliance status and specific pin-out compatibility. Confirm that the 16-TSSOP package dimensions match the target PCB footprint requirements. Ensure the operating temperature range of -40°C to 85°C aligns with the environmental constraints of the final application design.

Selection Notes

Select this component when a single-channel hot swap solution with integrated protection is required. It is suitable for designs needing programmable fault handling without external discrete components. Consider the 16-TSSOP package size for space-constrained layouts. Verify that the 3V to 8V supply range matches the system's available power rails before integration into the control architecture.

Part Context

The UCC3919 belongs to a family of hot swap controllers from Texas Instruments. The 'G4' suffix typically indicates lead-free packaging compliant with specific environmental standards. This part serves as a dedicated controller for managing power delivery during live insertion events, distinct from simple power switches or battery management ICs found in other TI product lines.

Replacement Considerations

Public confirmed substitute: TPS24700DGK.