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LNK6764K
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LNK6764K

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low power consumption - High efficiency - Compact size - Wide input voltage range - Over-temperature protection - Over-voltage protection - Short-circuit protection

Package: TO-220

Essence: The LNK6764K is a power management integrated circuit designed for efficient power conversion in various applications.

Packaging/Quantity: The LNK6764K is available in a TO-220 package and is typically sold in reels of 1000 units.

Specifications

The LNK6764K has the following specifications:

  • Input Voltage Range: 85V to 265V AC
  • Output Voltage: 5V DC
  • Output Current: Up to 1A
  • Efficiency: Up to 90%
  • Operating Temperature Range: -40°C to +125°C
  • Storage Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The LNK6764K has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. EN/UVLO: Enable/Undervoltage lockout pin
  5. BP/MODE: Brown-in/Brown-out or Frequency selection pin
  6. D: Drain pin for primary side power switch
  7. S: Source pin for primary side power switch

Functional Features

The LNK6764K offers the following functional features:

  • Primary-side control eliminates the need for an optocoupler and secondary-side feedback components.
  • Auto-restart protection feature ensures continuous operation even in fault conditions.
  • Frequency jittering reduces EMI emissions.
  • Built-in over-temperature, over-voltage, and short-circuit protection enhance system reliability.
  • Low standby power consumption in no-load conditions.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Compact size allows for space-saving designs. - Wide input voltage range enables worldwide compatibility. - Integrated protection features enhance system reliability. - Primary-side control simplifies circuit design.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Lack of adjustable output voltage limits flexibility in certain scenarios.

Working Principles

The LNK6764K utilizes primary-side control to regulate the output voltage. It operates by adjusting the duty cycle of the internal power switch based on the feedback received from the FB pin. This eliminates the need for an optocoupler and secondary-side feedback components, reducing cost and complexity. The integrated protection features ensure safe operation under various fault conditions.

Detailed Application Field Plans

The LNK6764K is commonly used in the following applications:

  1. Power supplies for consumer electronics
  2. LED lighting systems
  3. Industrial automation equipment
  4. Home appliances
  5. Battery chargers

Detailed and Complete Alternative Models

  1. LNK6764J: Similar specifications and features, but available in a different package (SOT-223).
  2. LNK6764M: Higher output current capability (up to 2A), suitable for more demanding applications.
  3. LNK6764N: Lower cost variant with reduced features, ideal for cost-sensitive designs.

These alternative models provide options to suit different requirements and design constraints.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LNK6764K في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LNK6764K in technical solutions:

  1. Q: What is LNK6764K? A: LNK6764K is a highly integrated, offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK6764K? A: LNK6764K features include primary-side regulation, high efficiency, accurate constant voltage (CV) and constant current (CC) control, and comprehensive protection features.

  3. Q: What are the typical applications of LNK6764K? A: LNK6764K is commonly used in LED lighting, smart home devices, industrial controls, and other low-power applications.

  4. Q: How does LNK6764K achieve primary-side regulation? A: LNK6764K uses a proprietary algorithm called EcoSmart™ technology to achieve primary-side regulation, eliminating the need for an optocoupler or secondary feedback circuitry.

  5. Q: What is the advantage of primary-side regulation in LNK6764K? A: Primary-side regulation simplifies the design, reduces component count, improves reliability, and lowers system cost.

  6. Q: Can LNK6764K operate in a wide input voltage range? A: Yes, LNK6764K can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  7. Q: Does LNK6764K support dimming functionality for LED lighting applications? A: Yes, LNK6764K supports both analog and PWM dimming methods for LED lighting applications.

  8. Q: What are the protection features offered by LNK6764K? A: LNK6764K provides protection against overvoltage, overcurrent, overtemperature, and short-circuit conditions.

  9. Q: Is LNK6764K compliant with safety standards? A: Yes, LNK6764K is designed to meet international safety standards such as UL, CE, and ENEC.

  10. Q: Are evaluation boards or reference designs available for LNK6764K? A: Yes, Power Integrations provides evaluation boards and reference designs to help engineers quickly implement LNK6764K in their applications.

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