LNK576DG-TL

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: TO-220

Essence: The LNK576DG-TL is a power management integrated circuit designed to efficiently regulate and control power in various electronic devices.

Packaging/Quantity: The LNK576DG-TL is typically packaged in a TO-220 package and is available in quantities of 1000 units per reel.

Specifications

The LNK576DG-TL has the following specifications:

• Input Voltage Range: 85V - 265V AC
• Output Voltage: 5V DC
• Output Current: 1.5A
• Efficiency: Up to 88%
• Operating Temperature Range: -40°C to +150°C
• Storage Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The LNK576DG-TL features a standard pin configuration with the following pins:

1. VCC: Power supply input
2. GND: Ground reference
3. FB: Feedback pin for output voltage regulation
4. EN/UVLO: Enable/Undervoltage Lockout pin
5. BP/MODE: Burst Mode® operation/Mode selection pin
6. DRAIN: High-voltage power MOSFET drain connection
7. SOURCE: High-voltage power MOSFET source connection

Functional Features

The LNK576DG-TL offers the following functional features:

• Primary-side regulation eliminates the need for an optocoupler or secondary-side feedback components.
• Auto-restart protection feature ensures continuous operation even in the event of a fault condition.
• Frequency jittering reduces EMI emissions, enabling compliance with international standards.
• Built-in over-temperature and short-circuit protection enhance system reliability and safety.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption and heat dissipation. - Compact size allows for space-saving designs. - Wide input voltage range enables compatibility with various power sources. - Over-temperature and short-circuit protection enhance system reliability.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Lack of adjustable output voltage may restrict certain design requirements.

Working Principles

The LNK576DG-TL utilizes a flyback topology to regulate the output voltage. It operates in a primary-side control mode, where the feedback signal is derived from the primary winding of the transformer. This eliminates the need for an optocoupler or secondary-side feedback components, simplifying the circuit design.

The IC incorporates a high-voltage power MOSFET that switches the primary current on and off at a high frequency. The energy stored in the transformer during the switch-on period is transferred to the output during the switch-off period. This process ensures efficient power conversion and regulation.

Detailed Application Field Plans

The LNK576DG-TL is commonly used in the following application fields:

1. Power adapters
2. LED lighting
3. Home appliances
4. Industrial controls
5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the LNK576DG-TL include:

1. LNK577DG-TL
2. LNK578DG-TL
3. LNK579DG-TL
4. LNK580DG-TL

These models offer similar functionality and characteristics, providing designers with flexibility in choosing the most suitable option for their specific application requirements.

In conclusion, the LNK576DG-TL is a power management IC that offers high efficiency, compact size, and a wide input voltage range. Its primary-side regulation, over-temperature protection, and short-circuit protection make it a reliable choice for various electronic devices. With its flyback topology and integrated features, the LNK576DG-TL simplifies circuit design and enhances power conversion efficiency.

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