Texas Instruments

UCC28633DR

UCC28633DR Description

The UCC28633DR from Texas Instruments is a high-performance offline switch-mode power supply (SMPS) controller designed for flyback topologies. This 7-SOIC surface-mount IC operates within a wide input voltage range (8V–20V) and supports isolated power conversion up to 30W. It features a switching frequency range of 200Hz–120kHz, enabling flexible design optimization for efficiency and EMI compliance. With a 70% maximum duty cycle, it ensures robust power delivery in demanding applications. The device is RoHS3 compliant and REACH unaffected, making it suitable for environmentally conscious designs.

UCC28633DR Features

• Advanced Protection: Integrated current limiting, overload, over-temperature, and over-voltage protection enhance system reliability.
• Low Startup Voltage: 14.75V startup threshold ensures stable operation under varying input conditions.
• Wide Frequency Range: 200Hz–120kHz switching allows trade-offs between efficiency and component size.
• Compact & Reliable: MSL 2 (1-year shelf life) and tape-and-reel packaging suit automated assembly.
• Energy-Efficient: Optimized for low standby power, aligning with global energy standards.

UCC28633DR Applications

• AC/DC Adapters: Ideal for 30W power supplies in consumer electronics (e.g., routers, set-top boxes).
• Industrial Power Systems: Suitable for isolated auxiliary supplies in motor drives and PLCs.
• LED Lighting: Efficiently drives low-to-mid-power LED drivers with precise control.
• Home Appliances: Used in smart home devices requiring compact, reliable power management.

Conclusion of UCC28633DR

The UCC28633DR stands out for its robust protection features, wide operating range, and flexibility in flyback designs. Its low startup voltage and high duty cycle make it superior to comparable controllers in cost-sensitive or space-constrained applications. Whether for consumer electronics, industrial systems, or LED drivers, this IC delivers high efficiency, reliability, and compliance with environmental standards, solidifying its position as a top choice for offline SMPS designs.