UCC256403ADDBR

Power Supply Controllers, Monitors Overview

The UCC256403ADDBR is an LLC resonant controller from Texas Instruments designed for ultra-low audible noise and standby power applications. It operates with a half-bridge topology in a 14-SOIC package. The device supports a minimum switching frequency of 35 kHz and a maximum duty cycle of 50%. It functions within a supply voltage range of 11.25 V to 30 V, drawing 2.2 mA of operating current. The component handles a typical gate drive current of 0.6 A and operates reliably across a temperature range of -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Integrated high-voltage startup circuitry enables operation from high input voltages without external bias supplies.
• Features programmable soft start and thermal shutdown protection for enhanced system reliability.
• Supports zero voltage switching control to maximize efficiency in resonant converter designs.

Power Supply Controllers, Monitors Applications

• High-efficiency AC-DC power supplies
• LCD TV power solutions
• Universal input isolated DC/DC converters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'A' indicates the extended industrial temperature grade variant when sourcing. Confirm the 'DDBR' designation corresponds to the SOIC-14 tape and reel packaging format required for automated assembly processes. Ensure compatibility with RoHS3 standards as specified by the manufacturer documentation.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring silent operation due to its ultra-low audible noise characteristics. It is suitable for applications demanding minimal standby power consumption. Consider the integrated gate driver capabilities and the wide input voltage range when designing the resonant tank and feedback loop.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCC25640x family of LLC resonant controllers. It shares core architectural features with variants like the UCC256403DDBR but may differ in temperature rating or specific electrical tolerances defined by the manufacturer's grading system.

Power Supply Controllers, Monitors Replacement Considerations

The UCC256403DDBR is a related variant within the same product family. Verify if the standard temperature grade meets application requirements before substituting.