LNK408LG

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: SOP-7 (Small Outline Package)

Essence: LNK408LG is a power management IC designed for efficient power conversion and regulation in various electronic devices.

Packaging/Quantity: The LNK408LG is typically sold in reels containing 2500 units per reel.

Specifications

The LNK408LG has the following specifications:

Input Voltage Range: 85V AC to 265V AC
Output Voltage: 5V DC
Output Current: 100mA
Operating Temperature Range: -40°C to +150°C
Efficiency: Up to 85%
Standby Power Consumption: Less than 50mW

Detailed Pin Configuration

The LNK408LG features a SOP-7 package with the following pin configuration:

VDD: Power supply input
BP/M: Bypass/Multifunction pin
FB: Feedback pin
GND: Ground
D: Drain pin
S: Source pin
NC: No connection

Functional Features

The LNK408LG offers the following functional features:

Primary-side control for simplified design
Integrated high-voltage MOSFET
Frequency jittering for reduced EMI emissions
Auto-restart protection for fault conditions
Cycle-by-cycle current limit
Line undervoltage detection
Output overvoltage protection

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Compact size allows for space-saving designs - Wide input voltage range enables global compatibility - Over-temperature, over-voltage, and short-circuit protection enhance reliability

Disadvantages: - Limited output current may not be suitable for high-power applications - SOP-7 package may require additional thermal management in certain cases

Working Principles

The LNK408LG utilizes primary-side control to regulate the output voltage. It integrates a high-voltage MOSFET that switches the input voltage to the transformer primary winding. The feedback pin monitors the output voltage and adjusts the duty cycle of the switching waveform to maintain a stable output. The IC also incorporates various protection mechanisms to ensure safe operation under different conditions.

Detailed Application Field Plans

The LNK408LG is commonly used in the following applications:

Power adapters for consumer electronics
LED lighting systems
Industrial power supplies
Home automation devices
Battery chargers

Detailed and Complete Alternative Models

LNK408PG: Similar specifications and features, but with a DIP-7 package.
LNK408EG: Enhanced version with higher output current capability (up to 500mA).
LNK408RG: Extended temperature range (-40°C to +175°C) for harsh environments.

These alternative models provide flexibility in selecting the most suitable option based on specific requirements.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням LNK408LG у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of LNK408LG in technical solutions:

Q: What is LNK408LG? A: LNK408LG is a low-cost, energy-efficient integrated circuit (IC) developed by Power Integrations for offline power conversion applications.
Q: What are the typical applications of LNK408LG? A: LNK408LG is commonly used in various applications such as LED lighting, smart home devices, industrial controls, and consumer electronics.
Q: What is the input voltage range supported by LNK408LG? A: LNK408LG supports a wide input voltage range from 85 VAC to 265 VAC, making it suitable for global use.
Q: Can LNK408LG be used for dimmable LED lighting solutions? A: Yes, LNK408LG can be easily integrated into dimmable LED lighting solutions, providing smooth and flicker-free dimming performance.
Q: Does LNK408LG offer protection features for overvoltage and overcurrent conditions? A: Yes, LNK408LG incorporates comprehensive protection features including overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
Q: What is the efficiency of LNK408LG? A: LNK408LG offers high efficiency up to 88%, helping to reduce power consumption and minimize heat dissipation.
Q: Is LNK408LG compatible with both primary-side and secondary-side regulation control methods? A: Yes, LNK408LG supports both primary-side and secondary-side regulation control methods, providing flexibility in design.
Q: Can LNK408LG operate in a wide temperature range? A: Yes, LNK408LG is designed to operate reliably in a wide temperature range from -40°C to 150°C.
Q: Does LNK408LG require an external heatsink for thermal management? A: In most applications, LNK408LG does not require an external heatsink due to its low power dissipation characteristics.
Q: Are there any reference designs available for LNK408LG? A: Yes, Power Integrations provides various reference designs and application notes to assist engineers in implementing LNK408LG in their technical solutions.

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