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UCC28C44D
20-V low-power current-mode PWM controller tailored for industrial use, offering a 50% duty cycle and 14.5-V/9-V undervoltage lockout functionalityUCC28C44D
20-V low-power current-mode PWM controller tailored for industrial use, offering a 50% duty cycle and 14.5-V/9-V undervoltage lockout functionality
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製造商零件號 # : UCC28C44D
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包裝/封裝: SOIC (D)-8
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製造商: Texas Instruments
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產品分類 : DC DC Switching Controllers
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UCC28C44D 數據表
價格 (USD)
| 數量 | 單價 | 總價 |
|---|---|---|
| 1 | $1.384 | $1.38 |
| 10 | $1.353 | $13.53 |
| 30 | $1.333 | $39.99 |
| 75 | $1.312 | $98.40 |
這些價格會受到市場波動的影響，需要提交報價才能取得最新價格。
詳細說明
The UCCx8C4x family is designed with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers, allowing for easy integration into existing designs. Additionally, the lower startup voltage versions of 7 V make it suitable for use in battery systems, further expanding its versatility
主要特徵
- Synchronous rectifier control IC with high efficiency
- Wide input voltage range of 4.5V to 15V
- Fault-tolerant operation and automatic restart
應用
- Integrated circuit use
- Versatile power control
- High efficiency design
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Topology | Boost, Buck, Flyback, Forward, SEPIC | Control mode | Current |
| Duty cycle (max) (%) | 50 | Switching frequency (max) (kHz) | 1000 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology, Programmable max duty cycle | UVLO thresholds on/off (V) | 14.5/9 |
| Operating temperature range (°C) | -40 to 125 | Rating | Catalog |
| Gate drive (typ) (A) | 1 | Vin (max) (V) | 18 |
Specification Comparison
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is UCC28C44D?
The UCC28C44D is a high-performance, low-power current-mode PWM controller designed by Texas Instruments. It is specifically designed for use in offline flyback converters, providing excellent efficiency and accuracy in power supply applications.
How Does UCC28C44D Work?
The UCC28C44D operates as a current-mode PWM controller, regulating the output voltage of the power supply by adjusting the duty cycle of the switching signal. It features a high-precision internal oscillator and programmable soft start to ensure stable and reliable power supply operation. The device offers protection features such as overvoltage protection and overcurrent protection for enhanced system reliability.
How Many Pins does UCC28C44D have and What are the Functions of the Pinout Configuration?
The UCC28C44D is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- 1. VCC: Power supply pin.
- 2. COMP: Error amplifier output pin.
- 3. FB: Feedback pin for regulating the output voltage.
- 4. CS: Current sense input for monitoring the switching current.
- 5. GND: Ground connection.
- 6. RT: Oscillator timing resistor connection.
- 7. CT: Oscillator timing capacitor connection.
- 8. OUT: Output pin for driving an external power switch.
What are the Pros and Cons of UCC28C44D?
Pros:
- High Efficiency: Optimized for high-efficiency power supply designs.
- Precision Control: Offers accurate current-mode control for stable output regulation.
- Protection Features: Includes various protection mechanisms for increased system reliability.
- Programmable Soft Start: Allows customizable soft start timing to prevent inrush currents.
- Compact Package: The 8-pin SOIC package is space-saving and easy to integrate into designs.
Cons:
- Application Specific: Primarily designed for offline flyback converters and may not be suitable for all power supply applications.
- External Components: May require additional external components for optimal performance in certain designs.
- Design Complexity: Requires careful consideration of layout and component selection for efficient operation.
Are There Any Equivalents/Alternatives to UCC28C44D for Recommendation?
- The UCC28051 from Texas Instruments is a similar current-mode PWM controller with additional features.
- Alternatives to the UCC28C44D include the UC3844 from STMicroelectronics and the NCP1207 from ON Semiconductor.
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