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LNK6774K
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LNK6774K

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low standby power consumption - Wide input voltage range - Over-temperature protection - Over-voltage protection - Over-current protection

Package: TO-220

Essence: The LNK6774K is a power management IC designed for efficient and reliable power conversion in various applications.

Packaging/Quantity: The LNK6774K is available in a TO-220 package and is typically sold in reels or tubes containing multiple units.

Specifications

The LNK6774K has the following specifications:

  • Input Voltage Range: 85V to 265V AC
  • Output Voltage: 5V DC
  • Output Current: Up to 2A
  • Efficiency: Up to 90%
  • Standby Power Consumption: Less than 100mW
  • Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The LNK6774K features a standard pin configuration as follows:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for regulating output voltage
  4. EN/UVLO: Enable/Undervoltage Lockout pin
  5. BP/MODE: Brown-in/Brown-out Protection or Frequency Selection pin
  6. DRAIN: High-voltage power MOSFET drain connection
  7. SOURCE: High-voltage power MOSFET source connection

Functional Features

The LNK6774K offers the following functional features:

  • Primary-side regulation for simplified design
  • Constant voltage (CV) and constant current (CC) operation modes
  • Auto-restart protection for fault conditions
  • Frequency jittering for reduced EMI emissions
  • Built-in soft-start for controlled startup
  • Cycle-by-cycle current limit for over-current protection

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for universal compatibility - Over-temperature, over-voltage, and over-current protections enhance reliability - Primary-side regulation simplifies design and reduces component count

Disadvantages: - Limited output current may not be suitable for high-power applications - Requires external components for complete power supply implementation

Working Principles

The LNK6774K utilizes a flyback topology to convert the high-voltage AC input into a regulated low-voltage DC output. The primary-side regulation eliminates the need for an optocoupler or secondary-side feedback circuitry, reducing cost and complexity. The IC operates in a continuous conduction mode (CCM) to achieve high efficiency and accurate output regulation.

Detailed Application Field Plans

The LNK6774K is commonly used in the following application fields:

  1. Power adapters for consumer electronics
  2. LED lighting drivers
  3. Industrial power supplies
  4. Home appliances
  5. Battery chargers

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LNK6774K include:

  1. LNK6774G
  2. LNK6774R
  3. LNK6774S
  4. LNK6774T

These models are part of the same product family and provide comparable features and performance.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LNK6774K dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of LNK6774K in technical solutions:

  1. Q: What is LNK6774K? A: LNK6774K is a highly integrated, offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK6774K? A: LNK6774K features include primary-side regulation, high efficiency, accurate constant current control, and comprehensive protection features.

  3. Q: What are the typical applications of LNK6774K? A: LNK6774K is commonly used in LED lighting, smart home devices, industrial controls, and other low-power applications.

  4. Q: How does LNK6774K achieve primary-side regulation? A: LNK6774K uses primary-side sensing and regulation techniques, eliminating the need for an optocoupler or secondary-side feedback circuitry.

  5. Q: Can LNK6774K operate in a wide input voltage range? A: Yes, LNK6774K can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  6. Q: Does LNK6774K support dimming functionality for LED lighting applications? A: Yes, LNK6774K supports both analog and PWM dimming methods for LED lighting applications.

  7. Q: What is the maximum output power that LNK6774K can handle? A: LNK6774K can handle up to 12W of output power, making it suitable for various low-power applications.

  8. Q: What protection features are included in LNK6774K? A: LNK6774K includes features like over-temperature protection, output short-circuit protection, and open-loop protection.

  9. Q: Can LNK6774K operate in a wide temperature range? A: Yes, LNK6774K is designed to operate in a wide temperature range, typically from -40°C to 150°C.

  10. Q: Is LNK6774K compliant with safety standards? A: Yes, LNK6774K is compliant with various safety standards, including UL, CE, and ENEC.

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