Power Integrations
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LNK354G
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LNK354G

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: DIP-8 (Dual In-line Package 8)

Essence: LNK354G is a power management integrated circuit designed for efficient power conversion and regulation.

Packaging/Quantity: The LNK354G is typically sold in reels containing 2500 units per reel.

Specifications

  • Input Voltage Range: 85V AC to 265V AC
  • Output Voltage: 5V DC
  • Output Current: Up to 200mA
  • Operating Temperature Range: -40°C to +150°C
  • Efficiency: Up to 90%
  • Standby Power Consumption: Less than 100mW

Detailed Pin Configuration

The LNK354G features the following pin configuration:

  1. VDD: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. BP/MODE: Burst mode control pin
  5. DRAIN: High-voltage power MOSFET drain connection
  6. SOURCE: High-voltage power MOSFET source connection
  7. VCC: Supply voltage for internal control circuitry
  8. NC: No connection

Functional Features

  • Primary-side sensing eliminates the need for an optocoupler or secondary-side feedback components.
  • Auto-restart protection feature ensures continuous operation even in the event of a fault condition.
  • Frequency jittering reduces EMI emissions, enabling compliance with international standards.
  • Built-in thermal shutdown provides over-temperature protection.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Compact size allows for space-saving designs. - Wide input voltage range enables compatibility with various power sources. - Over-temperature, over-voltage, and short-circuit protection enhance reliability.

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

Working Principles

The LNK354G utilizes a flyback topology to convert the high AC input voltage into a regulated low DC output voltage. It employs primary-side sensing to regulate the output voltage without the need for an optocoupler or secondary-side feedback components. The integrated circuit controls the switching of the high-voltage power MOSFET to achieve efficient power conversion.

Detailed Application Field Plans

The LNK354G is commonly used in various applications, including but not limited to: - Power adapters - LED lighting - Home appliances - Industrial equipment - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LNK354G include: - LNK352G - LNK353G - LNK355G - LNK356G

These alternative models provide options with different specifications and features, allowing designers to choose the most suitable solution for their specific requirements.

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10 سوال و پاسخ رایج مربوط به کاربرد LNK354G در راه حل های فنی را فهرست کنید

Sure! Here are 10 common questions and answers related to the application of LNK354G in technical solutions:

  1. Q: What is LNK354G? A: LNK354G is a highly integrated, offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK354G? A: LNK354G features include primary-side regulation, high efficiency, accurate constant current control, and comprehensive protection features.

  3. Q: What are the typical applications of LNK354G? A: LNK354G is commonly used in LED lighting, smart home devices, industrial controls, and other low-power applications.

  4. Q: How does LNK354G achieve primary-side regulation? A: LNK354G uses a proprietary technology called EcoSmart™ to regulate the output voltage directly from the primary side, eliminating the need for an optocoupler or secondary-side feedback circuitry.

  5. Q: Can LNK354G support dimming functionality for LED lighting applications? A: Yes, LNK354G can support both analog and PWM dimming methods for LED lighting applications.

  6. Q: What is the maximum output power that LNK354G can handle? A: LNK354G can handle up to 7.5 watts of output power, making it suitable for various low-power applications.

  7. Q: Does LNK354G have built-in protection features? A: Yes, LNK354G incorporates multiple protection features such as thermal shutdown, output short-circuit protection, and open-loop protection.

  8. Q: Can LNK354G operate in a wide input voltage range? A: Yes, LNK354G can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  9. Q: Is LNK354G compliant with safety standards? A: Yes, LNK354G is designed to meet various safety standards such as UL, EN, and IEC.

  10. Q: Are there any evaluation boards or reference designs available for LNK354G? A: Yes, Power Integrations provides evaluation boards and reference designs that can help engineers quickly prototype and implement solutions using LNK354G.

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