LNK6404D-TL

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low power consumption - High efficiency - Compact size - Wide input voltage range - Overload protection - Thermal shutdown protection

Package: ThinSOT-23-6

Essence: The LNK6404D-TL is a power management IC designed for efficient power conversion in various electronic devices.

Packaging/Quantity: The LNK6404D-TL is available in tape and reel packaging, with 3000 units per reel.

Specifications

The specifications of the LNK6404D-TL are as follows:

• Input Voltage Range: 85V to 265V AC
• Output Voltage: 5V DC
• Output Current: 200mA
• Switching Frequency: 132 kHz
• Operating Temperature Range: -40°C to +125°C
• Efficiency: Up to 85%
• Standby Power Consumption: Less than 50mW

Detailed Pin Configuration

The LNK6404D-TL has a total of six pins arranged as follows:

1. Pin 1: VDD - Power supply input
2. Pin 2: BP/MODE - Bootstrap/MODE selection pin
3. Pin 3: FB - Feedback pin for output voltage regulation
4. Pin 4: GND - Ground reference
5. Pin 5: Drain - High-voltage power MOSFET drain connection
6. Pin 6: Source - High-voltage power MOSFET source connection

Functional Features

The LNK6404D-TL offers the following functional features:

1. Primary-Side Regulation (PSR): Eliminates the need for an optocoupler or secondary-side feedback circuitry, reducing component count and cost.
2. Auto-restart Protection: Provides protection against output overvoltage, output undervoltage, and output short-circuit conditions.
3. Frequency Jittering: Reduces EMI emissions, ensuring compliance with electromagnetic compatibility (EMC) standards.
4. Cycle-by-Cycle Current Limiting: Protects the IC and external components from excessive current during overload or short-circuit conditions.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Compact size allows for space-saving designs - Wide input voltage range enables compatibility with various power sources - Overload and thermal shutdown protection ensure safe operation - Primary-side regulation simplifies circuit design and reduces costs

Disadvantages: - Limited output current may not be suitable for high-power applications - Lack of adjustable output voltage limits flexibility in certain applications

Working Principles

The LNK6404D-TL utilizes a flyback topology to convert the high-voltage AC input into low-voltage DC output. The primary-side regulation technique eliminates the need for an optocoupler by sensing the output voltage directly on the primary side. This information is fed back to the controller, which adjusts the duty cycle of the power MOSFET to maintain a stable output voltage.

Detailed Application Field Plans

The LNK6404D-TL is widely used in various electronic devices that require efficient power conversion, such as:

1. LED Lighting Systems
2. Home Appliances
3. Industrial Control Systems
4. Consumer Electronics
5. Power Adapters

Detailed and Complete Alternative Models

1. LNK6404E-TL
2. LNK6404G-TL
3. LNK6404H-TL
4. LNK6404J-TL

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

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