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UCC3813D-4
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UCC3813D-4

Product Overview

Category

UCC3813D-4 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 voltage regulators.

Characteristics

  • UCC3813D-4 is a high-performance, low-power current mode PWM controller.
  • It operates with a wide input voltage range, making it suitable for diverse applications.
  • The IC offers excellent line and load regulation, ensuring stable output voltages.
  • It features a built-in oscillator, error amplifier, and precision reference voltage source.
  • UCC3813D-4 provides protection against overcurrent and overvoltage conditions, enhancing system reliability.

Package

The UCC3813D-4 IC is available in a small outline package (SOP) with 8 pins. This compact package allows for easy integration into various circuit designs.

Essence

The essence of UCC3813D-4 lies in its ability to efficiently control and regulate power in electronic systems, ensuring stable and reliable operation.

Packaging/Quantity

UCC3813D-4 is typically packaged in reels or tubes, with each reel containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

  • Input Voltage Range: 2.7V to 18V
  • Output Voltage Range: 0.8V to VCC - 2V
  • Maximum Output Current: 500mA
  • Oscillator Frequency Range: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The UCC3813D-4 IC has the following pin configuration:

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

Functional Features

  1. Current Mode Control: UCC3813D-4 utilizes a current mode control scheme, providing excellent transient response and inherent stability.
  2. Wide Input Voltage Range: The IC can operate with an input voltage range of 2.7V to 18V, making it suitable for various power supply applications.
  3. Protection Mechanisms: UCC3813D-4 incorporates protection features such as overcurrent and overvoltage protection, safeguarding the system from potential faults.
  4. Precision Regulation: The IC offers precise regulation of the output voltage, ensuring stable and accurate power delivery to the load.
  5. Compact Design: With its small outline package (SOP) and minimal pin count, UCC3813D-4 enables space-efficient circuit designs.

Advantages and Disadvantages

Advantages

  • High-performance current mode PWM controller.
  • Wide input voltage range for versatile applications.
  • Excellent line and load regulation.
  • Built-in protection mechanisms enhance system reliability.
  • Compact package allows for easy integration.

Disadvantages

  • Limited maximum output current of 500mA.
  • Requires external frequency compensation components for optimal performance.

Working Principles

UCC3813D-4 operates based on the current mode control principle. It compares the sensed current through the power stage with a reference voltage to generate a control signal. This control signal regulates the duty cycle of the PWM (Pulse Width Modulation) signal, which in turn controls the power delivered to the load. By continuously monitoring and adjusting the duty cycle, UCC3813D-4 ensures stable output voltage regulation.

Detailed Application Field Plans

UCC3813D-4 finds applications in various power management systems, including: 1. Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. 2. Battery chargers for portable devices such as smartphones, tablets, and laptops. 3. Voltage regulators for automotive electronics, LED lighting, and consumer electronics.

Detailed and Complete Alternative Models

  1. UCC3813D-5: Similar to UCC3813D-4 but with a different maximum output current rating of 750mA.
  2. UCC3813D-3: Similar to UCC3813D-4 but with a lower input voltage range of 2.7V to 12V.
  3. UCC3813D-6: Similar to UCC3813D-4 but with a higher input voltage range of 2.7V to

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät UCC3813D-4 :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of UCC3813D-4 in technical solutions:

  1. Q: What is UCC3813D-4? A: UCC3813D-4 is a voltage mode PWM controller IC used for regulating power supplies.

  2. Q: What is the input voltage range of UCC3813D-4? A: The input voltage range of UCC3813D-4 is typically between 7V and 30V.

  3. Q: What is the output voltage range of UCC3813D-4? A: The output voltage range of UCC3813D-4 depends on the external components used, but it can be adjusted to meet specific requirements.

  4. Q: How does UCC3813D-4 regulate the output voltage? A: UCC3813D-4 uses a feedback loop to compare the actual output voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly.

  5. Q: Can UCC3813D-4 handle high current loads? A: UCC3813D-4 is primarily designed for low to medium power applications. For high current loads, additional external components may be required.

  6. Q: What is the maximum switching frequency of UCC3813D-4? A: The maximum switching frequency of UCC3813D-4 is typically around 500kHz.

  7. Q: Does UCC3813D-4 have built-in protection features? A: Yes, UCC3813D-4 includes features like overcurrent protection, thermal shutdown, and undervoltage lockout to ensure safe operation.

  8. Q: Can UCC3813D-4 operate in a wide temperature range? A: Yes, UCC3813D-4 is designed to operate in a wide temperature range, typically from -40°C to 85°C.

  9. Q: What type of power supply topologies can UCC3813D-4 be used in? A: UCC3813D-4 can be used in various power supply topologies such as flyback, forward, and boost converters.

  10. Q: Are there any application notes or reference designs available for UCC3813D-4? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC3813D-4 in different technical solutions.

Please note that the answers provided here are general and may vary depending on specific design considerations and requirements. It is always recommended to refer to the datasheet and application notes for detailed information.