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Updated at 01/11/2025 10:30:15(UTC+8)

Certifications

ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.

Description

DESCRIPTION
The UCC28740 isolated-flyback power-supply controller provides Constant-Voltage (CV) using an optical coupler to improve transient response to large load steps. Constant-Current (CC) regulation is accomplished through Primary-side Regulation (PSR) techniques. This device processes information from opto-coupled feedback and an auxiliary flyback winding for precise high-performance control of
output voltage and current.
FEATURES
• Less than 10-mW No-Load Power Capability
• Opto-Coupled Feedback for CV, and Primary-Side Regulation (PSR) for CC
• Enables ±1% Voltage Regulation and ±5% Current Regulation Across Line and Load
• 700-V Startup Switch
• 100-kHz Maximum Switching Frequency Enables High-Power-Density Charger Designs
• Resonant-Ring Valley-Switching Operation for Highest Overall Efficiency
• Frequency Dithering to Ease EMI Compliance
• Clamped Gate-Drive Output for MOSFET
• Overvoltage, Low-Line, and Overcurrent Protection Functions
• SOIC-7 Package
APPLICATIONS
• USB-Compliant Adapters and Chargers for Consumer Electronics
– Smart Phones
– Tablet Computers
– Cameras
• Standby Supply for TV and Desktop
• White Goods

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UCC28740DR Specifications

TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
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.

SN:H3.50726LO28446V47Q0QC0S1

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