UCC2918DP

Overview

The UCC2918DP is a single-channel hot swap controller manufactured by Unitrode, designed for general-purpose power supply support applications. It integrates an internal switch and operates within a voltage range up to 6V. The device is housed in a 16-SOIC package with a width of 3.90mm (0.154 inches). This component facilitates controlled insertion and removal of circuit boards from live backplanes, protecting against overcurrent and thermal events during system maintenance or expansion.

Feature Summary

• Integrates an internal power switch for compact board-level implementation
• Provides protection against overcurrent and thermal stress during hot insertion
• Supports controlled ramp-up of output voltage to limit inrush current

Applications

• General purpose hot swap control in telecommunications equipment
• Power supply support circuits requiring controlled board insertion
• Backplane systems needing overcurrent and thermal protection

Procurement Notes

Verify the manufacturer designation as Unitrode or Texas Instruments HiRel depending on the specific production lot and revision level. Confirm the package type is 16-SOIC and check for any radiation-hardened variants if operating in high-radiation environments. Ensure compatibility with the system's voltage requirements not exceeding 6V before procurement.

Selection Notes

Select this component when a single-channel solution with an integrated switch is required for hot swap applications. It is suitable for systems operating at voltages up to 6V where space constraints favor an SOIC package. Consider the internal switch capability to reduce external component count compared to discrete solutions.

Part Context

This part belongs to the Unitrode family of power management and AC logic components. Unitrode products are often integrated into Texas Instruments' portfolio, particularly within their HiRel division which offers improved radiation performance versions. The UCC2918DP serves as a specialized support circuit within broader power management architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative hot swap controllers from other manufacturers.