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UC2854BMDWREPG4
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UC2854BMDWREPG4

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: High efficiency, compact design, voltage regulation
  • Package: SOIC-16
  • Essence: Regulating and controlling power supply
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 8V to 40V
  • Output Voltage: Adjustable from 1.25V to 37V
  • Output Current: Up to 5A
  • Operating Temperature Range: -40°C to 125°C
  • Switching Frequency: 100kHz to 500kHz

Detailed Pin Configuration

  1. VIN (Pin 1) - Input Voltage
  2. GND (Pin 2) - Ground
  3. FB (Pin 3) - Feedback
  4. COMP (Pin 4) - Compensation
  5. SS/TR (Pin 5) - Soft Start/Tracking
  6. RT/CT (Pin 6) - Oscillator Timing
  7. VREF (Pin 7) - Reference Voltage
  8. VCC (Pin 8) - Control Voltage
  9. SYNC (Pin 9) - Synchronization
  10. NC (Pins 10, 11, 12) - No Connection
  11. PGND (Pin 13) - Power Ground
  12. DRV (Pin 14) - Gate Driver
  13. LX (Pin 15) - Switch Node
  14. VOUT (Pin 16) - Output Voltage

Functional Features

  • Voltage Regulation: Provides stable output voltage under varying input conditions
  • Current Limiting: Protects the circuit from overcurrent situations
  • Soft Start: Gradually ramps up the output voltage to prevent inrush current
  • Synchronization: Allows synchronization with an external clock signal

Advantages and Disadvantages

Advantages

  • High efficiency
  • Wide input voltage range
  • Compact design

Disadvantages

  • Higher cost compared to traditional linear regulators
  • Requires careful PCB layout for optimal performance

Working Principles

The UC2854BMDWREPG4 is a pulse width modulation (PWM) controller designed to regulate and control the output voltage of power supplies. It operates by comparing the feedback voltage with a reference voltage and adjusts the duty cycle of the internal switch to maintain the desired output voltage.

Detailed Application Field Plans

The UC2854BMDWREPG4 is commonly used in various power management applications such as: - DC-DC Converters - LED Drivers - Battery Charging Systems - Industrial Power Supplies

Detailed and Complete Alternative Models

  1. LM2576-ADJ
  2. LT1376-5
  3. TPS5430DDAR
  4. MAX5033DASA

This concludes the detailed entry for the UC2854BMDWREPG4 integrated circuit, covering its product information, specifications, features, advantages, disadvantages, working principles, application field plans, and alternative models.

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10個與UC2854BMDWREPG4在技術方案中應用相關的常見問題與解答

  1. What is the UC2854BMDWREPG4?

    • The UC2854BMDWREPG4 is a high-performance current mode PWM controller designed for use in power supply applications.

  2. What are the key features of the UC2854BMDWREPG4?

    • The key features include a wide input voltage range, precise duty cycle control, programmable soft start, and overcurrent protection.

  3. How does the UC2854BMDWREPG4 help in power supply designs?

    • It provides efficient and reliable control of power supplies, enabling precise regulation of output voltage and current.

  4. What are the typical applications of the UC2854BMDWREPG4?

    • It is commonly used in offline and DC-to-DC power supplies, LED drivers, and other industrial and consumer electronic applications.

  5. What is the operating temperature range of the UC2854BMDWREPG4?

    • The UC2854BMDWREPG4 operates within a temperature range of -40°C to 125°C, making it suitable for various environmental conditions.

  6. How can the UC2854BMDWREPG4 be configured for specific power supply requirements?

    • It can be easily programmed and configured through its external components to meet specific voltage, current, and protection needs.

  7. Does the UC2854BMDWREPG4 offer any built-in protection features?

    • Yes, it includes features such as overvoltage protection, undervoltage lockout, and thermal shutdown to safeguard the power supply and connected devices.

  8. What are the advantages of using the UC2854BMDWREPG4 in power supply designs?

    • It offers high efficiency, excellent line and load regulation, and robust performance, contributing to overall system reliability.

  9. Can the UC2854BMDWREPG4 be used in both AC and DC power supply designs?

    • Yes, it is suitable for both AC input and DC input power supply configurations, providing flexibility in design.

  10. Where can I find detailed technical information and application notes for the UC2854BMDWREPG4?

    • Detailed technical information and application notes can be found in the product datasheet and related documentation provided by the manufacturer.