LNK4004D-TL

Product Overview

Category

LNK4004D-TL belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power supply applications.

Characteristics

• Package: The LNK4004D-TL comes in a small outline transistor (SOT-223) package.
• Essence: It is a highly efficient, low-power offline switcher IC.
• Packaging/Quantity: The IC is typically sold in reels containing a specified quantity.

Specifications

The specifications for LNK4004D-TL are as follows:

• Input Voltage Range: 85 VAC to 265 VAC
• Output Power: Up to 4 W
• Frequency Range: 132 kHz to 150 kHz
• Efficiency: Up to 83%
• Operating Temperature Range: -40°C to +150°C
• Standby Power: Less than 30 mW

Detailed Pin Configuration

The pin configuration of LNK4004D-TL is as follows:

1. Drain (D)
2. Source (S)
3. Feedback (F)
4. Ground (G)
5. Control (C)

Functional Features

The LNK4004D-TL offers several functional features, including:

• Primary-side control eliminates the need for an optocoupler and secondary-side feedback components.
• Auto-restart protection ensures reliable operation by restarting the power supply in the event of a fault condition.
• Accurate output voltage regulation provides stable and precise power delivery.
• Built-in frequency jittering reduces EMI emissions, enabling compliance with international standards.

Advantages and Disadvantages

Advantages of using LNK4004D-TL include:

• Simplified design due to primary-side control.
• High efficiency leading to reduced power consumption.
• Compact SOT-223 package allows for space-saving designs.
• Wide input voltage range enables global compatibility.

Disadvantages of using LNK4004D-TL include:

• Limited output power capability (up to 4 W).
• Relatively high operating temperature range may require additional cooling measures in certain applications.

Working Principles

The LNK4004D-TL operates on the principle of primary-side regulation. It uses a proprietary integrated circuit that combines a power MOSFET, a controller, and various protection features. The IC controls the power delivered to the load by adjusting the duty cycle of the switching transistor based on the feedback received from the output voltage.

Detailed Application Field Plans

LNK4004D-TL finds application in various fields, including:

1. Consumer Electronics: Power supplies for televisions, set-top boxes, and audio systems.
2. Lighting: LED drivers for indoor and outdoor lighting fixtures.
3. Industrial Equipment: Power supplies for industrial control systems, motor drives, and instrumentation.
4. Home Appliances: Power supplies for refrigerators, washing machines, and air conditioners.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LNK4004D-TL are:

1. LNK4005D-TL
2. LNK4006D-TL
3. LNK4007D-TL
4. LNK4008D-TL

These models offer similar functionality and characteristics, providing flexibility in design choices.

In conclusion, LNK4004D-TL is a highly efficient, low-power offline switcher IC used in power supply applications. Its primary-side control, compact package, and wide input voltage range make it suitable for various consumer electronics, lighting, industrial equipment, and home appliance applications. While it has limitations in terms of output power and operating temperature range, there are alternative models available to cater to different requirements.