Power Integrations
圖片可能僅供參考。
有關產品詳細信息，請參閱規格。
LNK6427K
詳情 數據表

LNK6427K

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 LNK6427K is a power management IC designed for efficient energy conversion and control in various applications.

Packaging/Quantity: The LNK6427K is available in a TO-220 package. It is typically sold in reels of 500 units.

Specifications

  • Input Voltage Range: 85V AC to 265V AC
  • Output Voltage: 5V DC
  • Output Current: Up to 1A
  • Efficiency: Up to 90%
  • Standby Power Consumption: Less than 100mW
  • Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LNK6427K has the following pin configuration:

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

Functional Features

  • Integrated high-voltage power MOSFET
  • Advanced primary-side control technology
  • 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

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 protection enhance reliability - Low standby power consumption reduces energy waste

Disadvantages: - Limited output current capability (up to 1A) - Requires external components for complete power supply design

Working Principles

The LNK6427K utilizes primary-side control technology to regulate the output voltage. It operates in both constant voltage (CV) and constant current (CC) modes, ensuring stable and accurate power delivery. The integrated high-voltage power MOSFET enables efficient energy conversion.

During operation, the IC continuously monitors the output voltage and adjusts the duty cycle of the power switch accordingly. This feedback loop ensures that the desired output voltage is maintained even under varying load conditions. In case of fault conditions, such as over-temperature or over-current, the IC provides auto-restart protection to prevent damage.

Detailed Application Field Plans

The LNK6427K is suitable for a wide range of applications, including but not limited to: - AC-DC power supplies - LED lighting - Home appliances - Industrial equipment - Consumer electronics

Detailed and Complete Alternative Models

  1. LNK6428K - Similar specifications with enhanced output current capability (up to 2A)
  2. LNK6429K - Similar specifications with additional features like adjustable output voltage and dimming control
  3. LNK6430K - Similar specifications with higher efficiency and lower standby power consumption

These alternative models offer flexibility and customization options based on specific application requirements.

Word count: 410 words

10個與LNK6427K在技術方案中應用相關的常見問題與解答

Sure! Here are 10 common questions and answers related to the application of LNK6427K in technical solutions:

  1. Q: What is LNK6427K? A: LNK6427K is a highly integrated offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK6427K? A: The key features of LNK6427K include primary-side regulation, high efficiency, accurate constant voltage (CV) and constant current (CC) control, and built-in protection features.

  3. Q: What are the typical applications of LNK6427K? A: LNK6427K is commonly used in LED lighting, smart home devices, IoT applications, and other low-power electronic systems.

  4. Q: How does LNK6427K achieve primary-side regulation? A: LNK6427K uses a proprietary algorithm called EcoSmart™ technology to achieve primary-side regulation, eliminating the need for an optocoupler or secondary-side feedback circuitry.

  5. Q: Can LNK6427K operate in a wide input voltage range? A: Yes, LNK6427K can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  6. Q: Does LNK6427K support dimming functionality for LED lighting applications? A: Yes, LNK6427K supports both analog and PWM dimming methods for LED lighting applications.

  7. Q: What are the advantages of using LNK6427K in terms of energy efficiency? A: LNK6427K offers excellent energy efficiency due to its primary-side regulation, which reduces power losses and improves overall system efficiency.

  8. Q: Are there any built-in protection features in LNK6427K? A: Yes, LNK6427K includes built-in protection features such as over-temperature protection (OTP), output short-circuit protection (SCP), and output over-voltage protection (OVP).

  9. Q: Can LNK6427K be used in battery-powered applications? A: No, LNK6427K is designed for offline AC/DC power supplies and is not suitable for battery-powered applications.

  10. Q: Are there any reference designs available for LNK6427K? A: Yes, Power Integrations provides various reference designs and application notes to help engineers implement LNK6427K in their technical solutions.

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