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LNK403EG
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LNK403EG

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

Package: DIP-7 (Dual In-line Package)

Essence: The LNK403EG is a power management IC designed for low-power applications. It provides efficient power conversion and protection features in a compact package.

Packaging/Quantity: The LNK403EG is available in a DIP-7 package, which contains one IC per unit.

Specifications

The LNK403EG has the following specifications:

  • Input Voltage Range: 85V AC to 265V AC
  • Output Voltage: 5V DC
  • Output Current: Up to 200mA
  • Efficiency: Up to 80%
  • Operating Temperature Range: -40°C to +125°C
  • Storage Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The LNK403EG has a total of seven pins arranged as follows:

  1. VDD: Power supply pin
  2. GND: Ground pin
  3. BP/MODE: Feedback and control pin
  4. FB: Feedback pin
  5. DRAIN: Power switch drain pin
  6. SOURCE: Power switch source pin
  7. VCC: Supply voltage pin for internal circuitry

Functional Features

The LNK403EG offers the following functional features:

  • Primary-side regulation (PSR) control
  • Constant output voltage
  • Over-temperature protection
  • Over-voltage protection
  • Under-voltage lockout
  • Auto-restart after fault condition removal

Advantages and Disadvantages

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

Disadvantages: - Limited output current (up to 200mA) - Requires external components for complete power supply design

Working Principles

The LNK403EG utilizes primary-side regulation (PSR) control to regulate the output voltage. It operates by sensing the feedback signal through the FB pin and adjusting the duty cycle of the internal power switch accordingly. This control mechanism ensures a constant output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The LNK403EG is suitable for various low-power applications, including but not limited to:

  1. Home automation systems
  2. LED lighting
  3. Battery chargers
  4. Standby power supplies
  5. IoT devices

Detailed and Complete Alternative Models

  1. LNK404EG: Similar specifications and features, but with higher output current capability (up to 500mA).
  2. LNK405EG: Enhanced version with additional protection features, such as short-circuit protection and over-current protection.
  3. LNK406EG: Higher efficiency variant designed for ultra-low power applications.

These alternative models provide options for different power requirements and additional protection features based on specific application needs.

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10 domande e risposte comuni relative all'applicazione di LNK403EG nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of LNK403EG in technical solutions:

  1. Q: What is LNK403EG? A: LNK403EG is a highly integrated, energy-efficient power conversion IC designed for offline flyback converters.

  2. Q: What are the key features of LNK403EG? A: LNK403EG features include primary-side regulation, high-voltage startup, accurate constant voltage (CV) and constant current (CC) control, and comprehensive protection features.

  3. Q: What is primary-side regulation (PSR)? A: Primary-side regulation is a technique where the output voltage regulation is achieved by controlling the primary-side switching waveform, eliminating the need for an optocoupler or secondary-side feedback circuitry.

  4. Q: What are the advantages of using LNK403EG in technical solutions? A: LNK403EG offers benefits such as reduced component count, lower system cost, improved efficiency, and enhanced reliability due to its integrated features.

  5. Q: What applications can LNK403EG be used in? A: LNK403EG is commonly used in various applications including LED lighting, smart home devices, industrial controls, and consumer electronics.

  6. Q: How does LNK403EG achieve accurate CV and CC control? A: LNK403EG utilizes advanced control algorithms and feedback mechanisms to maintain precise control over the output voltage and current, ensuring stable and reliable operation.

  7. Q: What protection features does LNK403EG offer? A: LNK403EG provides protection against overvoltage, overcurrent, overtemperature, and short-circuit conditions, safeguarding the system and preventing damage.

  8. Q: Can LNK403EG operate in wide input voltage ranges? A: Yes, LNK403EG is designed to operate in a wide input voltage range, typically from 85VAC to 265VAC, making it suitable for global applications.

  9. Q: Does LNK403EG support dimming functionality for LED lighting applications? A: Yes, LNK403EG can be easily integrated with external components to enable dimming control for LED lighting solutions.

  10. Q: Are there any reference designs or application notes available for LNK403EG? A: Yes, the manufacturer of LNK403EG provides reference designs and application notes that offer guidance on implementing the IC in various technical solutions.

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