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UC2843AN
30-V, 1-A power supplyUC2843AN
30-V, 1-A power supply
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Manufacturer Part # : UC2843AN
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Package/Case: PDIP (P)-8
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Brand: Texas Instruments
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Product Categories : Power Supply Controllers, Monitors
Quality Assurance
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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
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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]
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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.
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UC2843AN DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $1.190 | $1.19 |
| 10 | $1.039 | $10.39 |
| 50 | $0.721 | $36.05 |
| 100 | $0.627 | $62.70 |
| 500 | $0.585 | $292.50 |
| 1000 | $0.566 | $566.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
UC2843AN is a member of the UCx84xA family of control devices, specifically engineered to deliver an improved and advanced version of the UCx84x family. These devices come equipped with all the essential features required to efficiently control current-mode or switched-mode power supplies. Noteworthy enhancements include a startup current of less than 0.5 mA, an oscillator discharge trimmed to 8.3 mA, and the ability of the output stage to sink at least 10 mA during UVLO at less than 1.2 V for VCC over 5 V
Key Features
- Rapid Cycle-Time Recovery
- High-Accuracy Voltage Regulation
- Sophisticated Thermal Management
- Precision Current Sensing
Application
- High efficiency in power supplies
- Regulating voltage for LEDs
- Fast switching in regulators
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Topology | Boost, Buck, Buck boost, Flyback, Forward | Control mode | Peak current mode |
| Duty cycle (max) (%) | 100 | Switching frequency (max) (kHz) | 500 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology | UVLO thresholds on/off (V) | 8.4/7.6 |
| Operating temperature range (°C) | -40 to 85 | Rating | Catalog |
| Gate drive (typ) (A) | 1 | Vin (max) (V) | 28 |
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 UC2843AN?
The UC2843AN is a high-performance current-mode PWM controller IC manufactured by Texas Instruments. It is commonly used in switch-mode power supply applications for controlling the power delivery to various electronic devices.
How Does UC2843AN Work?
The UC2843AN operates by regulating the output voltage of a power supply based on feedback from the output load. It utilizes current-mode control to provide constant and efficient power delivery. The IC compares the output voltage with a reference voltage and adjusts the duty cycle of the PWM signal to maintain stability and regulation.
How Many Pins does UC2843AN have and What are the Functions of the Pinout Configuration?
The UC2843AN is housed in an 8-pin PDIP (Plastic Dual-In-Line Package) or SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC: Power supply pin.
- RT/CT: Oscillator timing resistor/capacitor pin.
- OUT: Output driver pin for power transistor.
- COMP: Compensation pin for feedback loop stabilization.
- FB: Feedback pin for sensing the output voltage.
- RT/CT: Oscillator timing resistor/capacitor pin.
What are the Pros and Cons of UC2843AN?
Pros:
- Efficiency: Efficient current-mode control for optimized power delivery.
- Compact: 8-pin package for space-saving designs.
- Versatile: Suitable for a wide range of switch-mode power supply applications.
- Reliable: Texas Instruments quality and performance standards.
Cons:
- External Components: May require external components for specific power supply configurations.
- Limited Functionality: Basic PWM control features compared to more advanced controllers.
Are There Any Equivalents/Alternatives to UC2843AN for Recommendation?
- Alternatives to the UC2843AN include the TL494 from Texas Instruments and the SG3525A from STMicroelectronics.
- The equivalent part to UC2843AN is the UC3843A, which provides similar functionality with some differences in specifications.
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