UCC28221DRG4

Voltage - Supply (Vcc/Vdd):	8.4 V ~ 14.5 V
Base Part Number:	UCC28221
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-55°C ~ 150°C (TJ)
Control Features:	Soft Start
Fault Protection:	Current Limiting, Over Voltage
Frequency - Switching:	2MHz
Duty Cycle:	75%
Series:	--
Voltage - Start Up:	13V
Topology:	Flyback
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Isolated
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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UCC28221DRG4 Application Field and Working Principle Jayco Corporation\'s UCC28221DRG4 series is a type of PMIC (Power Management Integrated Circuit) device within the AC DC Converters, Offline Switchers category. This integrated circuit is compact yet highly efficient with superb performance and superior stability, commonly used for low-end offline AC-DC applications.The UCC28221DRG4 integrates a full-bridge rectifier and a full-bridge vortex switch to effectively reduce system power losses and improve power efficiency. Its full-bridge rectifier also helps filter out high frequency switching noise. A high-strength, low-impedance transformer helps reduce power loss and enhance efficiency.The UCC28221DRG4 features a fast start-up circuit to quickly turn on the power supply, achieving a maximum surge current up to 10.5A and making it suitable for driving high power loads on start-up. It also offers a wide input voltage range of 90-265VAC, making it suitable for most AC sources.The UCC28221DRG4 effectively keeps the output voltage stable and accurate within ±1%. It also offers an intelligent over-current protection system, with an internal current limit coupled with a fast shutdown. The UCC28221DRG4 also features a temperature protection mechanism and an undervoltage protection circuit, making it suitable for applications where reliable and accurate performance is required.The UCC28221DRG4 is mainly used in linear LED lighting and LED street lights, LED projectors, LED small displays and LED back-lighting applications. It is also commonly used in low-end dryers and electrical heated blankets.To sum up, the UCC28221DRG4 is a reliable and accurate device for AC-DC switching needs with a fast start-up, wide voltage range, over-current protection, temperature protection, and undervoltage protection. It is an ideal choice for low-end offline applications where performance and reliability are required.

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