Texas Instruments

UCC3802D

UCC3802D Description

The UCC3802D from Texas Instruments is a high-performance offline switch-mode power supply (SMPS) controller designed for AC/DC conversion in various topologies, including Boost, Buck, Flyback, and Forward configurations. Housed in an 8-pin SOIC package, this surface-mount IC operates with a wide supply voltage range of 8.3V to 12V and features a start-up voltage of 12.5V, ensuring reliable power-up sequences. With a switching frequency capability of up to 1MHz, it enables compact, high-efficiency power supply designs. The device is ROHS3 compliant and REACH unaffected, making it suitable for environmentally conscious applications.

UCC3802D Features

• Multi-Topology Support: Compatible with Boost, Buck, Flyback, and Forward converters, offering design flexibility.
• High Switching Frequency: Up to 1MHz operation allows for smaller passive components and reduced PCB footprint.
• Robust Protection: Integrated current limiting ensures safe operation under fault conditions.
• Wide Duty Cycle: 99% maximum duty cycle enhances efficiency in high-load scenarios.
• Low-Power Start-Up: Operates efficiently with a 12.5V start-up voltage, minimizing power waste.
• Surface-Mount Package: 8-SOIC form factor suits compact and automated assembly processes.

UCC3802D Applications

The UCC3802D excels in offline power supply systems, including:

• Industrial Power Supplies: Reliable performance in harsh environments.
• Consumer Electronics: Compact, efficient power conversion for adapters and chargers.
• LED Drivers: High-frequency operation supports dimming and constant-current designs.
• Telecom & Networking Equipment: Stable voltage regulation for sensitive electronics.
• Auxiliary Power Modules: Low-power start-up ensures energy-efficient standby modes.

Conclusion of UCC3802D

The UCC3802D stands out as a versatile, high-frequency SMPS controller, combining multi-topology support, robust protection, and compact packaging. Its 1MHz switching capability and 99% duty cycle make it ideal for high-efficiency, space-constrained designs. Whether in industrial, consumer, or telecom applications, this IC delivers reliable performance and design flexibility, backed by Texas Instruments' quality and compliance with global environmental standards.