Texas Instruments
Bild kan vara representation.
Se specifikationer för produktinformation.
UCC28881DR
Visa detalj Datablad

UCC28881DR

Product Overview

Category

UCC28881DR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications.

Characteristics

  • Integrated circuit
  • Power management functionality
  • High efficiency
  • Compact size

Package

UCC28881DR is available in a small outline package (SOIC) with 8 pins.

Essence

The essence of UCC28881DR lies in its ability to efficiently manage power in various electronic devices.

Packaging/Quantity

UCC28881DR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input voltage range: 4.5V to 25V
  • Output voltage range: 0.8V to 12V
  • Maximum output current: 1A
  • Switching frequency: 100kHz to 1MHz
  • Operating temperature range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. FB: Feedback pin for regulating output voltage
  4. COMP: Compensation pin for stability control
  5. CS: Current sense pin for current regulation
  6. SS/TR: Soft-start and tracking pin
  7. EN/UVLO: Enable and undervoltage lockout pin
  8. VOUT: Output voltage pin

Functional Features

  • Wide input voltage range allows for versatile applications
  • High efficiency ensures minimal power loss
  • Integrated protection features such as overcurrent and overtemperature protection
  • Soft-start function prevents excessive inrush current during startup
  • Adjustable output voltage for flexibility in different applications

Advantages and Disadvantages

Advantages

  • High efficiency leads to energy savings
  • Compact size enables space-saving designs
  • Integrated protection features enhance reliability
  • Adjustable output voltage allows for customization

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications
  • Requires external components for complete power management solution

Working Principles

UCC28881DR operates based on a pulse width modulation (PWM) control scheme. It regulates the output voltage by adjusting the duty cycle of the switching signal. This control mechanism ensures efficient power transfer from the input to the output.

Detailed Application Field Plans

UCC28881DR finds application in various fields, including but not limited to: 1. Power supplies for consumer electronics 2. Industrial automation systems 3. LED lighting systems 4. Battery charging circuits 5. Automotive electronics

Detailed and Complete Alternative Models

  1. UCC28881D: Similar to UCC28881DR, but without the SOIC package.
  2. UCC28882DR: A higher current version of UCC28881DR with a maximum output current of 2A.
  3. UCC28883DR: Offers additional features such as adjustable frequency and synchronization capability.

These alternative models provide similar functionality and can be considered as substitutes for UCC28881DR depending on specific requirements.

Word count: 446 words

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC28881DR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC28881DR in technical solutions:

  1. Q: What is UCC28881DR? A: UCC28881DR is a high-performance, synchronous flyback controller used for power supply applications.

  2. Q: What is the input voltage range supported by UCC28881DR? A: UCC28881DR supports an input voltage range from 4.5V to 30V.

  3. Q: What is the maximum output power that can be achieved with UCC28881DR? A: The maximum output power depends on the specific design and external components used. However, UCC28881DR can support power levels up to 100W.

  4. Q: Can UCC28881DR operate in continuous conduction mode (CCM)? A: Yes, UCC28881DR can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM).

  5. Q: How does UCC28881DR achieve high efficiency? A: UCC28881DR utilizes advanced control techniques like valley switching and frequency foldback to achieve high efficiency across various load conditions.

  6. Q: Does UCC28881DR have built-in protection features? A: Yes, UCC28881DR includes various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.

  7. Q: Can UCC28881DR be used in offline applications? A: Yes, UCC28881DR is suitable for offline applications as it operates directly from the rectified AC line voltage.

  8. Q: What is the typical operating frequency of UCC28881DR? A: The typical operating frequency of UCC28881DR is around 100 kHz to 150 kHz.

  9. Q: Can UCC28881DR support multiple output voltages? A: Yes, UCC28881DR can support multiple output voltages by using external components like transformers and feedback circuits.

  10. Q: What are the key advantages of using UCC28881DR in power supply designs? A: Some key advantages of UCC28881DR include high efficiency, wide input voltage range, flexible operating modes, built-in protection features, and ease of integration into various applications.

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