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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The UCC28881 integrates the controller and a 14-Ω, 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. UCC28881 is the same family device of UCC28880, with higher current handling capability.
The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components.
The UCC28881 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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UCC28881D Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	7 Pin
Case/Package	SOIC-7
Power Rating	4.5 W
Output Current	225 mA
Breakdown Voltage	700 V
Number of Positions	7 Position
Switching Frequency	62 kHz
Topology	Buck
Duty Cycle	55 %
Input Voltage (AC Max)	560 v
Input Voltage (AC Min)	30 v
Maximum Duty Cycle	55 %
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
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Operating Temperature	-40℃ ~ 125℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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