Power Integrations
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LNK6418K
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LNK6418K

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 - Short-circuit protection

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

Essence: LNK6418K is a power management IC designed for efficient energy conversion and regulation.

Packaging/Quantity: Available in reels of 2500 units per reel.

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Voltage: 5VDC
  • Output Current: 100mA
  • Operating Temperature Range: -40°C to +105°C
  • Efficiency: Up to 85%
  • Standby Power Consumption: Less than 50mW

Detailed 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 or external bias supply
  5. DRAIN: High-voltage power MOSFET drain connection
  6. SOURCE: High-voltage power MOSFET source connection
  7. VCC: Supply voltage for internal control circuitry

Functional Features

  • Primary-side control eliminates the need for an optocoupler
  • Auto-restart protection feature for fault conditions
  • Frequency jittering reduces EMI filter cost
  • Built-in thermal shutdown protection
  • Cycle-by-cycle current limit protection
  • Accurate output voltage regulation

Advantages

  • Simplified design due to primary-side control
  • Enhanced safety with auto-restart protection
  • Reduced EMI filter cost through frequency jittering
  • Robust protection against over-temperature and short-circuits
  • Efficient energy conversion resulting in lower power consumption

Disadvantages

  • Limited output current capacity (100mA)
  • Restricted input voltage range (85VAC to 265VAC)
  • Relatively high operating temperature limit (+105°C)

Working Principles

LNK6418K utilizes primary-side control, eliminating the need for an optocoupler. It regulates the output voltage by adjusting the duty cycle of the internal power MOSFET. The IC operates in a burst mode, reducing power consumption during light load conditions. It incorporates various protection features such as thermal shutdown and cycle-by-cycle current limit to ensure safe operation.

Detailed Application Field Plans

  1. Power supplies for low-power consumer electronics
  2. Standby power adapters for home appliances
  3. LED lighting applications
  4. Battery chargers
  5. Industrial control systems

Detailed and Complete Alternative Models

  1. LNK632DG: Similar specifications with higher output current capacity (200mA)
  2. LNK623DG: Lower input voltage range (70VAC to 265VAC) with similar characteristics
  3. LNK648DG: Higher output voltage (12VDC) with comparable features

Note: The above alternative models are provided as examples and may not cover all available options.

This entry provides an overview of LNK6418K, a power management IC used for efficient energy conversion and regulation. It includes information on its specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

Énumérez 10 questions et réponses courantes liées à l'application de LNK6418K dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of LNK6418K in technical solutions:

  1. Q: What is LNK6418K? A: LNK6418K is a highly integrated offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK6418K? A: The key features of LNK6418K include primary-side regulation, high efficiency, accurate constant current control, and built-in protection features.

  3. Q: What are the typical applications of LNK6418K? A: LNK6418K is commonly used in LED lighting, smart home devices, IoT applications, and other low-power electronic systems.

  4. Q: How does LNK6418K achieve primary-side regulation? A: LNK6418K uses a proprietary technology called EcoSmart™ to provide accurate output voltage regulation without the need for an optocoupler or secondary feedback circuitry.

  5. Q: Can LNK6418K operate in a wide input voltage range? A: Yes, LNK6418K can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  6. Q: Does LNK6418K support dimming functionality for LED lighting applications? A: Yes, LNK6418K supports both analog and PWM dimming methods, making it suitable for various LED lighting dimming requirements.

  7. Q: What are the advantages of using LNK6418K in technical solutions? A: Some advantages of using LNK6418K include simplified design, reduced component count, improved system reliability, and compliance with energy efficiency standards.

  8. Q: Is LNK6418K compatible with other power management ICs? A: Yes, LNK6418K can be easily integrated with other power management ICs to provide a complete solution for various applications.

  9. Q: Does LNK6418K have built-in protection features? A: Yes, LNK6418K incorporates various protection features such as over-temperature protection, output short-circuit protection, and open-loop protection.

  10. Q: Where can I find more information about LNK6418K and its application in technical solutions? A: You can refer to the datasheet, application notes, and technical documentation provided by the manufacturer of LNK6418K for detailed information on its application in technical solutions.