UCC28880D SOP7 UCC28880DR Semiconductor Devices AC DC Converter IC

UCC28880D sop7 UCC28880DR Semiconductor Devices

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1 Features

• Integrated Power MOSFET (Switch) Rated to
700-V Drain-to-Source Voltage
• Integrated High-Voltage Current Source for
Internal Low-Voltage Supply Generation
• Soft Start
• Self-Biased Switcher (Start Up and Operation
Directly from Rectified Mains Voltage)
• Supports Buck, Buck-Boost and Flyback
Topologies
• <100-μA Device Quiescent Current
• Robust Performance with Inductor Current
Runaway Prevention
• Thermal Shutdown
• Protection
– Current Limit
– Overload and Output Short Circuit
• Create a Custom Design Using the UCC28880
with the WEBENCH Power Designer

2 Applications

• AC-to-DC Power Supplies
(Output Current Up to 100 mA for CCM;
70 mA for DCM)
• Metering, Home Automation, Infrastructure SMPS
• Low-Side Buck Topology for TRIAC Driver
• Appliances, White Goods and LED Drivers

3 Description

The UCC28880 integrates the controller and a 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage.

The low quiescent current of the device enables excellent efficiency. With the UCC28880 the most common converter topologies, such as buck, buckboost and flyback can be built using a minimum number of external components.

The UCC28880 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

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