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UC2844D
Current Mode PWM Controller 200mA 500kHz 14-Pin SOIC Tube
UC2844D
Current Mode PWM Controller 200mA 500kHz 14-Pin SOIC Tube
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Manufacturer Part # : UC2844D
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Package/Case: SOIC-14
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Brand: Texas Instruments
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Product Categories : Power Supply Controllers, Monitors
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.
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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.
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UC2844D DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $4.128 | $4.13 |
| 200 | $1.597 | $319.40 |
| 500 | $1.542 | $771.00 |
| 1000 | $1.514 | $1,514.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
The UC2844D is a cutting-edge current mode PWM controller specially designed for power supply and battery charger applications. With its high-performance features, including a programmable oscillator frequency range, it offers flexibility in designing various power supply topologies. The controller's high-current totem-pole output stage with peak current drive capability allows for direct power MOSFETs or IGBTs driving, making it ideal for medium to high power applications. Moreover, the UC2844D comes equipped with built-in over-voltage protection, under-voltage lockout, and current limiting functions to ensure system reliability and protection
Key Features
- Synchronous rectifier driver circuits
- Soft-start and foldback current limiting
- Internally trimmed bandgap reference
- Programmable undervoltage lockout
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Topology | Boost, Buck, Flyback, Forward | Control mode | Peak current mode |
| Duty cycle (max) (%) | 50 | Switching frequency (max) (kHz) | 500 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology | UVLO thresholds on/off (V) | 16/10 |
| 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 UC2844D?
The UC2844D is a high-performance current-mode PWM controller designed by Texas Instruments. It is commonly used in power supply applications to regulate voltage and control the output current, making it suitable for various power management systems.
How Does UC2844D Work?
The UC2844D operates as a current-mode PWM controller, providing precise control over the power supply output. It compares a feedback signal with a reference voltage to adjust the duty cycle of the PWM signal, regulating the output voltage. The device features adjustable frequency and maximum duty cycle settings for flexibility in power supply designs.
How Many Pins does UC2844D have and What are the Functions of the Pinout Configuration?
The UC2844D is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC: Supply voltage pin.
- CS: Current sense input.
- GND: Ground pin.
- RT/CT: Timing resistor/capacitor pin.
- COMP: Compensation pin for loop stability.
- SS/TR: Soft-start/tracking pin.
- OUT: PWM output pin.
- FB: Feedback pin for regulation.
What are the Pros and Cons of UC2844D?
Pros:
- Current-Mode Control: Provides inherent current limiting and ease of loop compensation.
- Adjustable Parameters: Offers flexibility in frequency and duty cycle control.
- Protection Features: Includes overcurrent protection and soft-start function for enhanced reliability.
- Efficient Power Management: Enables efficient power supply designs with high accuracy.
- Compact Package: The 8-pin SOIC package is compact and suitable for space-constrained applications.
Cons:
- External Components: May require external components for specific application requirements.
- Complexity: Requires understanding of power supply design principles for optimal performance.
Are There Any Equivalents/Alternatives to UC2844D for Recommendation?
- The UC3844 from Texas Instruments is a similar current-mode PWM controller with extended features.
- Alternatives to the UC2844D include the TL494 from Texas Instruments and the SG3524 from STMicroelectronics.
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