Texas Instruments

UCC35701DTR

UCC35701DTR Description

The UCC35701DTR from Texas Instruments is a high-performance offline switch IC designed for AC/DC power conversion in various topologies, including Boost, Buck, Flyback, and Forward configurations. Packaged in a 14-SOIC surface-mount format, this ROHS3-compliant device operates with a wide supply voltage range of 9V to 15V and features a high 700kHz switching frequency, enabling efficient power management in compact designs. Its soft-start and synchronization (Sync) capabilities ensure smooth power-up sequences, while current-limiting fault protection enhances system reliability. With a 99% duty cycle and isolated output, it is optimized for high-efficiency, isolated power supplies.

UCC35701DTR Features

• Multi-Topology Support: Compatible with Boost, Buck, Flyback, and Forward converters.
• High Switching Frequency: 700kHz operation reduces passive component size.
• Robust Protection: Integrated current limiting safeguards against overloads.
• Control Flexibility: Soft-start and synchronization (Sync) for controlled startup and noise reduction.
• Wide Input Range: 9V–15V supply voltage accommodates diverse applications.
• Surface-Mount Design: 14-SOIC package for space-constrained PCB layouts.
• High Duty Cycle: 99% maximizes power delivery efficiency.

UCC35701DTR Applications

• Isolated Power Supplies: Telecom, industrial, and medical equipment requiring galvanic isolation.
• DC-DC Converters: High-efficiency voltage regulation in embedded systems.
• LED Drivers: Constant-current/voltage control for lighting solutions.
• Adapter/Charger Circuits: Compact offline power conversion for consumer electronics.
• Industrial SMPS: Reliable performance in harsh environments with transient protection.

Conclusion of UCC35701DTR

The UCC35701DTR stands out for its versatile topology support, high-frequency operation, and robust protection features, making it ideal for demanding power conversion tasks. Its small footprint, efficiency, and compliance with industry standards (ROHS3, REACH unaffected) position it as a superior choice for engineers designing isolated, high-reliability power systems. Whether for industrial, medical, or consumer applications, this IC delivers precision, durability, and scalability in modern power electronics.