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LNK6768K-TL
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LNK6768K-TL

Product Overview

Category

LNK6768K-TL belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in various electronic devices and systems for power management applications.

Characteristics

  • LNK6768K-TL is a highly efficient and compact IC designed for offline flyback converters.
  • It incorporates a range of features that enhance performance, reliability, and safety.
  • The IC operates at high frequency, enabling smaller transformer size and reduced overall system cost.
  • It offers excellent load and line regulation, ensuring stable output voltage under varying conditions.
  • LNK6768K-TL includes comprehensive protection features such as overvoltage, overcurrent, and thermal shutdown.

Package

The LNK6768K-TL IC is available in a small outline SMD package, making it suitable for space-constrained applications.

Essence

The essence of LNK6768K-TL lies in its ability to efficiently convert AC input voltage to regulated DC output voltage, while providing necessary protection mechanisms.

Packaging/Quantity

LNK6768K-TL is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 10W
  • Output Voltage: Configurable within a specified range
  • Efficiency: Greater than 85%
  • Operating Frequency: Adjustable between 66kHz and 132kHz
  • Standby Power Consumption: Less than 30mW
  • Protection Features: Overvoltage, Overcurrent, Thermal Shutdown

Detailed Pin Configuration

The LNK6768K-TL IC has the following pin configuration:

  1. VDD - Power supply input
  2. BP/M - Bypass/Multifunction pin
  3. FB - Feedback pin for output voltage regulation
  4. DRAIN - High-voltage power MOSFET drain connection
  5. SOURCE - High-voltage power MOSFET source connection
  6. VCC - Internal bias supply output
  7. GND - Ground reference

Functional Features

  • Primary-side control eliminates the need for an optocoupler, reducing component count and cost.
  • Accurate output voltage regulation ensures stable performance across varying load and line conditions.
  • Auto-restart feature enables automatic recovery from fault conditions, enhancing system reliability.
  • Frequency jittering reduces EMI emissions, complying with international standards.
  • Built-in protection features safeguard the IC and connected components from potential damage.

Advantages and Disadvantages

Advantages

  • High efficiency and compact size enable miniaturization of power supply designs.
  • Comprehensive protection mechanisms enhance system reliability and safety.
  • Primary-side control simplifies circuit design and reduces component count.
  • Wide input voltage range allows for global compatibility.
  • Low standby power consumption contributes to energy efficiency.

Disadvantages

  • Limited output power capability may not be suitable for high-power applications.
  • Requires careful consideration of thermal management due to high-frequency operation.

Working Principles

LNK6768K-TL operates on the principle of primary-side regulation in a flyback converter topology. It utilizes a high-voltage power MOSFET to switch the primary winding of the transformer. The secondary winding provides the desired output voltage, which is regulated through feedback control. The IC continuously monitors the output voltage and adjusts the duty cycle of the switching transistor to maintain the desired output voltage level.

Detailed Application Field Plans

LNK6768K-TL finds application in various fields, including but not limited to: - Consumer electronics (e.g., TVs, set-top boxes, audio systems) - LED lighting - Industrial equipment - Home appliances - Power adapters

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LNK6768K-TL include: - LNK6767K-TL - LNK6769K-TL - LNK6770K-TL - LNK6771K-TL

These models are designed for different power levels or may have slight variations in features, but they can serve as suitable alternatives depending on specific requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LNK6768K-TL i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of LNK6768K-TL in technical solutions:

  1. Q: What is LNK6768K-TL? A: LNK6768K-TL is a highly integrated, offline switcher IC designed for low-power applications.

  2. Q: What are the typical applications of LNK6768K-TL? A: LNK6768K-TL is commonly used in applications such as LED lighting, smart home devices, industrial controls, and consumer electronics.

  3. Q: What is the input voltage range supported by LNK6768K-TL? A: LNK6768K-TL supports an input voltage range from 85VAC to 265VAC.

  4. Q: What is the maximum output power that can be achieved with LNK6768K-TL? A: The maximum output power depends on the specific design and application, but typically ranges from 5W to 15W.

  5. Q: Does LNK6768K-TL support dimming functionality for LED lighting applications? A: Yes, LNK6768K-TL supports both analog and PWM dimming for LED lighting applications.

  6. Q: Can LNK6768K-TL operate in a wide temperature range? A: Yes, LNK6768K-TL has a wide operating temperature range of -40°C to +150°C.

  7. Q: Is LNK6768K-TL suitable for high-efficiency designs? A: Yes, LNK6768K-TL features primary-side regulation (PSR) technology, which enables high efficiency and eliminates the need for optocouplers.

  8. Q: Does LNK6768K-TL have built-in protection features? A: Yes, LNK6768K-TL includes various protection features such as over-temperature protection, output short-circuit protection, and input over-voltage protection.

  9. Q: Can LNK6768K-TL be used in offline flyback converter topologies? A: Yes, LNK6768K-TL is specifically designed for offline flyback converter applications.

  10. Q: Are there any reference designs available for LNK6768K-TL? A: Yes, Power Integrations provides reference designs and application notes that can help engineers implement LNK6768K-TL in their designs.

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