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

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Description

QUASI−RESONANT PWM CONTROLLER FOR HIGH POWER AC−DC WALL ADAPTERS
The NCP1380 hosts a high−performance circuitry aimed to powering quasi−resonant converters. Capitalizing on a proprietary valley−lockout system, the controller shifts gears and reduces the switching frequency as the power loading becomes lighter. This results in a stable operation despite switching events always occurring in the drain−source valley. This system works down to the 4th valley and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance.
Features
•Quasi−Resonant Peak Current−Mode Control Operation
•Valley Switching Operation with Valley−Lockout for Noise−Immune Operation
•Frequency Foldback at Light Load to Improve the Light Load Efficiency
•Adjustable Over Power Protection
•Auto−Recovery or Latched Internal Output Short−Circuit Protection
•Fixed Internal 80 ms Timer for Short−Circuit Protection
•Combined Overvoltage and Overtemperature Protection (A and B Versions)
•Combined Overvoltage Protection and Brown−Out (C and D Versions)
•+500 mA / −800 mA Peak Current Source/Sink Capability
•Internal Temperature Shutdown
•Direct Optocoupler Connection
•Extended VCCRange Operation Up to 28 V
•Extremely Low No−Load Standby Power
•SO−8 Package
•These Devices are Pb−Free and are RoHS Compliant
Typical Applications
•High Power ac−dc Converters for TVs, Set−Top Boxes etc.
•Offline Adapters for Notebooks

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NCP1380BDR2G Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Supply Voltage (DC)	28.0V (max)
Halogen Free Status	Halogen Free
Number of Outputs	1 Output
Output Voltage	15.5 V
Output Current	800 mA
Number of Positions	8 Position
Rise Time	40 ns
Topology	Flyback
Fall Time	25 ns
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	9V ~ 28V
Supply Voltage (Max)	28 V
Input Voltage	17 V
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Size-Length	5 mm
Size-Width	4 mm
Size-Height	1.5 mm
Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99
HK STC License	NLR

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(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- Carefully inspected and packed by ManyChip warehouse
- Vacuum packaging
- Anti-static packaging
- Shockproof foam
The terms here are for reference only, the actual terms are subject to the sales quotation.
- Please confirm product specifications when ordering.
- MOQ refers to the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the ordering page.
- Inspection (PSI) will be performed prior to shipment.
- Income Quality Control (IQC), 1000+ qualified dealers.
- Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray control
- XRF inspection
- Electrical testing
- Surface testing
-Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity

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