UCC28881 Series

700-V Lowest Quiescent current off-line switcher

Catalog

700-V Lowest Quiescent current off-line switcher

Part	Power (Watts)	Mounting Type	Voltage - Breakdown	Voltage - Supply (Vcc/Vdd)	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Output Isolation	Supplier Device Package	Frequency - Switching	Voltage - Start Up	Fault Protection	Duty Cycle	Package / Case [custom]	Package / Case	Package / Case [custom]	Package / Case	Outputs and Type	Outputs and Type	Utilized IC / Part	Supplied Contents	Board Type	Voltage - Output	Main Purpose	Regulator Topology	Voltage - Input [Min]	Voltage - Input [Max]	Power - Output	Current - Output
Texas Instruments UCC28881DR	4.5 W	Surface Mount	700 V	5 V	-40 °C	125 ¯C	Buck Buck-Boost Flyback	Non-Isolated	7-SOIC	62 kHz	3.9 V	Current Limiting Over Load Over Temperature Short Circuit	55 %	7	8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC28881D	4.5 W	Surface Mount	700 V	5 V	-40 °C	125 ¯C	Buck Buck-Boost Flyback	Non-Isolated	7-SOIC	62 kHz	3.9 V	Current Limiting Over Load Over Temperature Short Circuit	55 %	7	8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC28881EVM-680																		Non-Isolated	1	UCC28881	Board(s)	Fully Populated	13 V	AC/DC Primary Side	Buck	85 VAC	265 VAC	2.9 W	225 mA

Catalog

700-V Lowest Quiescent current off-line switcher

Key Features

• Integrated 14-Ω, 700-V Power MOSFETIntegrated High-Voltage Current Source for Internal Device Bias PowerIntegrated Current SenseInternal Soft StartSelf-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)Supports Buck, Buck-Boost and Flyback Topologies<100-μA Device Quiescent CurrentRobust Current Protection During Load Short CircuitProtectionCurrent LimitOverload and Output Short CircuitOver TemperatureIntegrated 14-Ω, 700-V Power MOSFETIntegrated High-Voltage Current Source for Internal Device Bias PowerIntegrated Current SenseInternal Soft StartSelf-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)Supports Buck, Buck-Boost and Flyback Topologies<100-μA Device Quiescent CurrentRobust Current Protection During Load Short CircuitProtectionCurrent LimitOverload and Output Short CircuitOver Temperature

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. 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.