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UCC3808APWTR-2
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UCC3808APWTR-2

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - Low-power current mode PWM controller - Designed for off-line and DC-to-DC converter applications - Provides necessary features to implement a high-performance, cost-effective power supply - Suitable for low standby power systems

Package: TSSOP-14

Essence: The UCC3808APWTR-2 is an integrated circuit that serves as a low-power current mode PWM controller. It is commonly used in power management applications, specifically in off-line and DC-to-DC converter systems. This IC offers various features required to implement efficient and cost-effective power supplies, making it ideal for low standby power systems.

Packaging/Quantity: The UCC3808APWTR-2 is available in a TSSOP-14 package. It is typically sold in reels or tubes containing multiple units.

Specifications

The UCC3808APWTR-2 has the following specifications:

  • Supply Voltage Range: 4.5V to 12V
  • Operating Temperature Range: -40°C to 85°C
  • Oscillator Frequency Range: 1kHz to 500kHz
  • Maximum Duty Cycle: 100%
  • Output Current: ±0.5A
  • Error Amplifier Bandwidth: 10kHz
  • Soft Start Time: Adjustable

Pin Configuration

The UCC3808APWTR-2 features a TSSOP-14 package with the following pin configuration:

  1. COMP: Compensation Pin
  2. FB: Feedback Pin
  3. CS: Current Sense Pin
  4. GND: Ground Pin
  5. VREF: Reference Voltage Pin
  6. VDD: Supply Voltage Pin
  7. RT/CT: Timing Components Connection Pin
  8. SS/TR: Soft Start/Shutdown Pin
  9. OUT: Output Pin
  10. NC: No Connection
  11. NC: No Connection
  12. NC: No Connection
  13. NC: No Connection
  14. NC: No Connection

Functional Features

The UCC3808APWTR-2 offers the following functional features:

  1. Low-power current mode PWM control
  2. Internal soft start and shutdown functions
  3. Adjustable oscillator frequency
  4. Error amplifier with precise voltage reference
  5. Overcurrent protection
  6. Under-voltage lockout (UVLO) protection
  7. Thermal shutdown protection

Advantages and Disadvantages

Advantages: - Low-power consumption - Cost-effective solution for power management - Wide supply voltage range - Adjustable soft start time - Comprehensive protection features

Disadvantages: - Limited output current capacity - Restricted operating temperature range

Working Principles

The UCC3808APWTR-2 operates based on a low-power current mode PWM control scheme. It utilizes an internal oscillator to generate a switching frequency, which is adjustable within a specified range. The error amplifier compares the feedback voltage with a precise reference voltage, regulating the duty cycle of the PWM signal. This control mechanism ensures efficient power transfer in various applications.

Detailed Application Field Plans

The UCC3808APWTR-2 finds extensive use in the following application fields:

  1. Switched-mode power supplies (SMPS)
  2. Offline power converters
  3. DC-to-DC converters
  4. Battery chargers
  5. LED lighting systems
  6. Industrial automation equipment
  7. Consumer electronics

Detailed and Complete Alternative Models

  1. UCC3808AD-2: Similar specifications and pin configuration, available in SOIC-8 package.
  2. UCC3808AN-2: Similar specifications and pin configuration, available in PDIP-8 package.
  3. UCC3808APW-2: Similar specifications and pin configuration, available in TSSOP-14 package.

These alternative models provide similar functionality and can be used as substitutes for the UCC3808APWTR-2 in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UCC3808APWTR-2 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of UCC3808APWTR-2 in technical solutions:

  1. Q: What is UCC3808APWTR-2? A: UCC3808APWTR-2 is a high-performance, low-power current mode PWM controller used in various power supply applications.

  2. Q: What are the key features of UCC3808APWTR-2? A: Some key features include low start-up current, adjustable switching frequency, cycle-by-cycle current limiting, and integrated soft-start.

  3. Q: What is the typical input voltage range for UCC3808APWTR-2? A: The typical input voltage range is between 7V and 25V.

  4. Q: How does UCC3808APWTR-2 help in power supply designs? A: UCC3808APWTR-2 provides control and regulation of the power supply output, ensuring stable and efficient operation.

  5. Q: Can UCC3808APWTR-2 be used in both AC and DC power supplies? A: Yes, UCC3808APWTR-2 can be used in both AC and DC power supply applications.

  6. Q: What is the maximum operating frequency of UCC3808APWTR-2? A: The maximum operating frequency is typically around 1MHz.

  7. Q: Does UCC3808APWTR-2 have built-in protection features? A: Yes, UCC3808APWTR-2 includes features like overvoltage protection, undervoltage lockout, and thermal shutdown.

  8. Q: Can UCC3808APWTR-2 be used in battery-powered applications? A: Yes, UCC3808APWTR-2 can be used in battery-powered applications as it has low start-up current and operates efficiently at low power levels.

  9. Q: What is the output voltage range of UCC3808APWTR-2? A: The output voltage range depends on the external components used in the power supply design.

  10. Q: Are there any application notes or reference designs available for UCC3808APWTR-2? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC3808APWTR-2 in various power supply solutions.

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