Texas Instruments

UCC3802D  

AC DC Converters, Offline Switches

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.

UCC3802D Documents

Download datasheets and manufacturer documentation for UCC3802D

EOL :

Product Discontinuance Notification 2024-02-20 (PDF)       Product Discontinuance Notification 2024-02-26 (PDF)      

Images :

Mechanical Outline Drawing       Function Diagram      

PCN :

Qualification of Alternate Material Set for Assembly with Au Wire and Cu as Additional Wire Base Metal Option for Select SOIC and SSOP Package Devices (PDF)       Product Change Notification (PDF)      

Product Catalogs :

Power Management Guide 2018 (Rev. R)      

Application Notes :

Dual Output Boost Converter      

Technical Resources :

UCCX802 & UCCX813-2 TINA-TI Steady State Reference Design       UCCX802 & UCCX813-2 TINA-TI Startup Reference Design      

SPICE Models :

UCCX802 & UCCX813-2 TINA-TI Transient Spice Model       UCCx802 & UCCx813-2 Unencrypted PSpice Transient Model       UCCx813-2, UCCx802 Families PSpice Transient Model (Rev. B)