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

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Description

The UCCx80x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.
These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
The UCCx80x family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803 and UCC2805 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line power supplies.
The UCC180x series is specified for operation from 55°C to 125°C, the UCC280x series is specified for operation from 40°C to 85°C, and the UCC380x series is specified for operation from 0°C to 70°C.
100-µA Typical Starting Supply Current
500-µA Typical Operating Supply Current
Operation up to 1 MHz
Internal Soft Start
Internal Fault Soft Start
Internal Leading-Edge Blanking of the Current
Sense Signal
1-A Totem-Pole Output
70-ns Typical Response from Current-Sense
to Gate Drive Output
1.5% Tolerance Voltage Reference
Same Pinout as UC3842 and UC3842A

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UCC3803 Specifications

TT in advance (bank transfer), Western Union, Credit card,
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charges, duties and taxes.
- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(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

If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.

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