UCC28881DR - Texas Instruments

Manufacturer Part Number

UCC28881DR

Manufacturer

Texas Instruments

Introduction

The UCC28881DR is a high-efficiency, wide-range, quasi-resonant flyback controller IC designed for offline power supplies.

Product Features and Performance

Quasi-resonant switching for high efficiency

Wide operating voltage range of 3.9V to 700V

Integrated 700V startup switch

Comprehensive protection features including current limiting, overload, overtemperature, and short-circuit protection

55% maximum duty cycle for improved efficiency

Frequency synchronization capability

Adjustable soft-start function

Product Advantages

High efficiency for reduced power loss and heat dissipation

Wide operating voltage range for versatility in different applications

Integrated protection features for reliable and safe operation

Adjustable soft-start for controlled startup

Key Technical Parameters

Switching frequency: 62kHz

Topology: Buck, Buck-Boost, Flyback

Supply voltage: 5V

Fault protection: Current limiting, overload, overtemperature, short-circuit

Voltage breakdown: 700V

Startup voltage: 3.9V

Output isolation: Non-isolated

Power rating: 4.5W

Duty cycle: 55%

Internal switch: Yes

Quality and Safety Features

RoHS3 compliant

Wide operating temperature range of -40°C to 125°C

Compatibility

Surface mount package: 8-SOIC (0.154", 3.90mm width), 7 leads

Supplier device package: 7-SOIC

Packaging: Tape & Reel (TR)

Application Areas

Offline power supplies

Flyback converters

Buck, Buck-Boost, and Flyback topologies

Product Lifecycle

The UCC28881DR is an active product from Texas Instruments and is not nearing discontinuation.

Replacements and upgrades may be available in the future as technology advances.

Several Key Reasons to Choose This Product

High efficiency for reduced power loss and heat dissipation

Wide operating voltage range for versatility in different applications

Comprehensive protection features for reliable and safe operation

Adjustable soft-start for controlled startup

Suitable for a variety of offline power supply and converter topologies