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UCC28704DBVR-1
AC/DC Converters High-Efficiency Off-Line CV and CC Flyback Controller with Primary-Side Regulation (PSR) 6-SOT-23 -40 to 125
UCC28704DBVR-1
AC/DC Converters High-Efficiency Off-Line CV and CC Flyback Controller with Primary-Side Regulation (PSR) 6-SOT-23 -40 to 125
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Manufacturer Part # : UCC28704DBVR-1
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Package/Case: SOT23-6
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Part Status : ACTIVE
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Brand: Texas Instruments
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Product Categories : AC DC Converters, Offline Switches
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
About Payment
We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.
If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
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UCC28704DBVR-1 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
Another notable aspect of the UCC28704 is its compatibility with TI secondary-side synchronous rectifier controllers, making it suitable for higher output current levels and offering increased conversion efficiency. The controller also includes provisions for board or component over temperature protection through an NTC interface pin. This further enhances the overall reliability of the system, ensuring that connectors and components are safeguarded against potential damage due to overheating or faults
Key Features
- Precision voltage regulation
- High-efficiency power conversion
- User-friendly interface ensured
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Control mode | Primary-side regulation | UVLO thresholds on/off (V) | 21/7.7 |
| Duty cycle (max) (%) | 99 | Switching frequency (max) (kHz) | 85 |
| Features | CC/CV output regulation, Cable compensation, DCM, NTC resistor interface, PSR, Primary-side regulated, Quasi-Resonant, Soft start, Valley switching | Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog | Device type | Controllers |
| Topology | Buck, Flyback |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is UCC28704DBVR-1?
The UCC28704DBVR-1 is a highly integrated active-clamp flyback (ACF) controller designed by Texas Instruments. It is specifically designed for high-efficiency, low-standby-power AC-DC power supplies, making it suitable for applications such as USB power delivery, smart home devices, and industrial power systems.
How Does UCC28704DBVR-1 Work?
The UCC28704DBVR-1 operates by controlling the power delivery in ACF power supplies, enabling them to achieve high efficiency while minimizing standby power consumption. The controller features advanced protection and control algorithms to ensure safe and reliable operation under various load conditions, making it suitable for a wide range of power supply designs.
How Many Pins does UCC28704DBVR-1 have and What are the Functions of the Pinout Configuration?
The UCC28704DBVR-1 is housed in a 6-pin SOT-23 package. The pinout configuration includes:
- VDD: Power supply pin for the controller.
- ACN: AC line input pin.
- ACN: AC line input pin.
- PIN: A pin used for circuit programming and control.
- RT/CLK: Resistor connected to this pin sets the switching frequency.
- REFOUT: Reference voltage output pin used for multiple flyback converter configurations.
What are the Pros and Cons of UCC28704DBVR-1?
Pros:
- High Integration: The controller is highly integrated, reducing external component count and board space.
- Efficiency: Enables high-efficiency power supply designs, contributing to energy savings and reduced heat generation.
- Standby Power Reduction: Minimizes standby power consumption for energy-efficient operation.
- Protection Features: Incorporates advanced protection features for safe and reliable operation.
- Wide Application Range: Suitable for various AC-DC power supply applications.
Cons:
- External Components: May require careful consideration of external components for optimal performance in specific designs.
- Complexity: ACF power supply designs may require additional attention to control and feedback loop design.
Are There Any Equivalents/Alternatives to UCC28704DBVR-1 for Recommendation?
- The UCC28710 from Texas Instruments is a similar active-clamp flyback controller with additional features.
- Alternatives to the UCC28704DBVR-1 include the FAN103 from ON Semiconductor and the NCP1399 from ON Semiconductor.
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