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UCC2808N-1
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UCC2808N-1

Product Overview

Category

UCC2808N-1 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

  • UCC2808N-1 is a high-performance voltage mode PWM controller.
  • It operates with a wide input voltage range, making it suitable for different power supply designs.
  • The IC offers precise control over output voltage and current, ensuring stable and efficient power delivery.
  • It features built-in protection mechanisms such as overvoltage and overcurrent protection, enhancing system reliability.

Package

UCC2808N-1 is available in a standard 8-pin dual in-line package (DIP), which facilitates easy integration into circuit boards.

Essence

The essence of UCC2808N-1 lies in its ability to regulate and control power supply systems efficiently, ensuring optimal performance and protection.

Packaging/Quantity

UCC2808N-1 is typically packaged in reels or tubes, with each reel containing approximately 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Output Voltage Range: 0V to VCC
  • Maximum Output Current: 500mA
  • Operating Temperature Range: -40°C to 85°C
  • Switching Frequency: Adjustable up to 1MHz
  • Error Amplifier Gain Bandwidth: 2.1MHz

Pin Configuration

UCC2808N-1 follows an industry-standard pin configuration:

  1. COMP: Compensation pin for error amplifier feedback.
  2. CS: Current sense pin for monitoring output current.
  3. GND: Ground reference for the IC.
  4. FB: Feedback pin for regulating output voltage.
  5. VCC: Power supply input pin.
  6. OUT: Output pin for connecting to power devices.
  7. RT/CT: Timing resistor and capacitor connection pin for setting switching frequency.
  8. SS/TR: Soft-start and shutdown control pin.

Functional Features

  1. Voltage Mode Control: UCC2808N-1 utilizes voltage mode control, enabling precise regulation of output voltage.
  2. Adjustable Switching Frequency: The IC allows the user to adjust the switching frequency according to specific application requirements.
  3. Soft-Start Function: UCC2808N-1 incorporates a soft-start feature, gradually ramping up the output voltage during startup to prevent excessive inrush current.
  4. Protection Mechanisms: The IC includes built-in protection features such as overvoltage and overcurrent protection, safeguarding the power supply system from potential damage.

Advantages and Disadvantages

Advantages

  • High-performance voltage mode PWM controller.
  • Wide input voltage range for versatile applications.
  • Precise control over output voltage and current.
  • Built-in protection mechanisms enhance system reliability.
  • Easy integration into circuit boards with standard 8-pin DIP package.

Disadvantages

  • Limited maximum output current of 500mA.
  • Operating temperature range may not be suitable for extreme environments.

Working Principles

UCC2808N-1 operates based on the voltage mode control technique. It compares the feedback voltage (FB) with a reference voltage to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load. By continuously monitoring and adjusting the duty cycle, UCC2808N-1 ensures stable output voltage regulation.

Detailed Application Field Plans

UCC2808N-1 finds extensive use in various power management applications, including: 1. Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. 2. Battery chargers for portable devices, electric vehicles, and renewable energy systems. 3. LED drivers for lighting applications, including residential, commercial, and automotive lighting.

Detailed and Complete Alternative Models

  1. UCC2808N: Similar to UCC2808N-1 but without the built-in protection mechanisms.
  2. UCC2809: A higher current version of UCC2808N-1, capable of delivering up to 1A output current.
  3. UCC3808: A pin-compatible alternative with additional features such as adjustable slope compensation.

(Note: The above list is not exhaustive and serves as a starting point for exploring alternative models.)

In conclusion, UCC2808N-1 is a versatile voltage mode PWM controller widely used in power supply systems. Its precise control, wide input voltage range, and built-in protection mechanisms make it an excellent choice for various applications.

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi UCC2808N-1 dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of UCC2808N-1 in technical solutions:

Q1: What is UCC2808N-1? A1: UCC2808N-1 is a high-performance, low-power current mode PWM controller designed for offline and DC-to-DC converter applications.

Q2: What are the key features of UCC2808N-1? A2: Some key features of UCC2808N-1 include low start-up current, internal soft-start, cycle-by-cycle current limiting, and adjustable frequency up to 1MHz.

Q3: What are the typical applications of UCC2808N-1? A3: UCC2808N-1 is commonly used in applications such as AC/DC power supplies, battery chargers, LED drivers, and DC-DC converters.

Q4: How does UCC2808N-1 help in improving power supply efficiency? A4: UCC2808N-1 uses a current mode control technique that provides excellent line and load regulation, resulting in improved power supply efficiency.

Q5: Can UCC2808N-1 operate in both continuous and discontinuous conduction modes? A5: Yes, UCC2808N-1 can operate in both continuous and discontinuous conduction modes, making it suitable for a wide range of applications.

Q6: How can I adjust the switching frequency of UCC2808N-1? A6: The switching frequency of UCC2808N-1 can be adjusted by changing the value of an external resistor connected to the RT pin.

Q7: Does UCC2808N-1 have built-in protection features? A7: Yes, UCC2808N-1 has built-in protection features such as cycle-by-cycle current limiting, overvoltage protection, and thermal shutdown.

Q8: Can UCC2808N-1 operate with wide input voltage range? A8: Yes, UCC2808N-1 can operate with a wide input voltage range, typically up to 30V.

Q9: What is the maximum output current that UCC2808N-1 can handle? A9: The maximum output current that UCC2808N-1 can handle depends on the external components used in the application circuit.

Q10: Is UCC2808N-1 available in different package options? A10: Yes, UCC2808N-1 is available in different package options such as SOIC-8 and PDIP-8, providing flexibility for various PCB layouts.

Please note that these answers are general and may vary depending on the specific application and requirements.