UCC256404DDBR

Power Supply Controllers, Monitors Overview

The UCC256404DDBR is an LLC resonant controller from Texas Instruments designed for high-efficiency power conversion. It features ultra-low power consumption and ultra-quiet standby operation, supported by a high-voltage startup capability that eliminates the need for auxiliary windings. The device operates within a temperature range of -40°C to +125°C and utilizes a 14-SOIC package.

Power Supply Controllers, Monitors Feature Summary

• Integrates high-voltage startup circuitry to simplify transformer design
• Optimized for zero voltage switching in LLC resonant topologies
• Supports wide AC input ranges with integrated X-capacitor discharge

Power Supply Controllers, Monitors Applications

• Offline DC/DC converters
• Isolated power supply designs
• LLC resonant converter implementations

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'DDBR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to PCB placement to ensure adherence to storage and reflow soldering guidelines specified in the manufacturer documentation.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems requiring minimal standby power without auxiliary winding complexity. It is suitable for applications demanding high efficiency across varying load conditions. Ensure the design supports half-bridge or LLC resonant topologies compatible with its current frequency control method.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCC25640x family of LLC resonant controllers manufactured by Texas Instruments. These devices are categorized under PMIC power management ICs, specifically isolated DC/DC controllers. The family shares core functionalities such as ultra-low quiescent current and high-voltage startup capabilities tailored for modern energy-efficient power supplies.

Power Supply Controllers, Monitors Replacement Considerations

The UCC256402ADDBR is a documented substitute within the same product family offering similar LLC resonant control features.