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UCC3804NG4
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UCC3804NG4

Product Overview

The UCC3804NG4 belongs to the category of voltage mode controllers and is commonly used in power management applications. This integrated circuit offers characteristics such as high efficiency, precise regulation, and robust performance. The UCC3804NG4 is typically available in a small package, making it suitable for compact designs. It is an essential component in power supply units, contributing to their reliable and efficient operation.

Package and Quantity

The UCC3804NG4 is commonly available in a small outline integrated circuit (SOIC) package. It is often supplied in reels or tubes, with varying quantities based on the supplier and customer requirements.

Specifications

  • Input Voltage Range: 8V to 20V
  • Output Voltage Range: 0V to 5V
  • Operating Temperature Range: -40°C to 125°C
  • Maximum Output Current: 500mA
  • Frequency Range: 50kHz to 1MHz

Detailed Pin Configuration

The UCC3804NG4 features a standard pin configuration, including: 1. VCC 2. COMP 3. RT/CT 4. GND 5. OUTPUT 6. CS 7. SS/TR 8. FB

Functional Features

The UCC3804NG4 integrates various functional features, including: - Voltage Mode Control - Soft Start Functionality - Overcurrent Protection - Error Amplifier for Precise Regulation - Adjustable Frequency Operation

Advantages and Disadvantages

Advantages

  • High Efficiency
  • Precise Regulation
  • Compact Package
  • Robust Performance
  • Wide Operating Temperature Range

Disadvantages

  • Limited Maximum Output Current
  • Requires External Components for Full Functionality

Working Principles

The UCC3804NG4 operates based on voltage mode control, where the output voltage is regulated by comparing it to a reference voltage. It utilizes an error amplifier to continuously adjust the duty cycle of the output signal, ensuring precise regulation. Additionally, the soft start functionality allows for gradual ramp-up of the output voltage, reducing stress on connected components during startup.

Detailed Application Field Plans

The UCC3804NG4 finds extensive application in various power management systems, including: - Switched-Mode Power Supplies (SMPS) - DC-DC Converters - LED Drivers - Battery Charging Systems - Industrial Power Supplies

Detailed and Complete Alternative Models

Some alternative models to the UCC3804NG4 include: - UCC2804: Similar functionality with different pin configuration - LM5117: Buck controller with higher output current capability - LT1240: High frequency step-up controller for specific applications

In conclusion, the UCC3804NG4 is a versatile voltage mode controller that offers precise regulation and high efficiency, making it an ideal choice for various power management applications.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von UCC3804NG4 in technischen Lösungen auf

  1. What is the UCC3804NG4?

    • The UCC3804NG4 is a high-performance current-mode PWM controller designed for applications requiring high efficiency and fast transient response.

  2. What are the key features of the UCC3804NG4?

    • The key features include a wide input voltage range, precision internal reference, programmable soft start, cycle-by-cycle current limiting, and adjustable switching frequency.

  3. What are the typical applications of the UCC3804NG4?

    • Typical applications include isolated and non-isolated power supplies, LED drivers, and other applications requiring a high-performance PWM controller.

  4. How does the UCC3804NG4 help improve efficiency in power supplies?

    • The UCC3804NG4 provides precise control over the power supply operation, allowing for efficient energy transfer and minimizing power losses.

  5. What is the maximum operating frequency of the UCC3804NG4?

    • The UCC3804NG4 can operate at frequencies up to 1MHz, making it suitable for high-frequency switching power supply designs.

  6. Does the UCC3804NG4 have built-in protection features?

    • Yes, the UCC3804NG4 includes features such as overcurrent protection, overvoltage protection, and thermal shutdown to ensure reliable and safe operation.

  7. Can the UCC3804NG4 be used in both buck and boost converter topologies?

    • Yes, the UCC3804NG4 is versatile and can be used in various converter topologies, including buck, boost, and flyback configurations.

  8. What is the recommended input voltage range for the UCC3804NG4?

    • The UCC3804NG4 is designed to operate with input voltages ranging from 9V to 30V, making it suitable for a wide range of power supply designs.

  9. How does the UCC3804NG4 handle soft start in power supply applications?

    • The UCC3804NG4 features a programmable soft start function that allows for controlled startup of the power supply, reducing inrush current and stress on components.

  10. Are there any application notes or reference designs available for the UCC3804NG4?

    • Yes, Texas Instruments provides comprehensive application notes and reference designs to assist engineers in implementing the UCC3804NG4 in their technical solutions.