LNK564DG

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-8 (Dual In-line Package)

Essence: LNK564DG is a power management IC designed to provide efficient and reliable power conversion in various electronic devices.

Packaging/Quantity: The LNK564DG is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 1A
• Operating Temperature Range: -40°C to +150°C
• Efficiency: Up to 90%
• Standby Power Consumption: Less than 100mW

Detailed Pin Configuration

The LNK564DG features the following 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 pin
5. DRAIN: High-voltage power MOSFET drain connection
6. SOURCE: High-voltage power MOSFET source connection
7. VCC: Supply voltage for internal control circuitry
8. NC: No connection

Functional Features

• Primary-side control eliminates the need for an optocoupler or secondary-side feedback circuitry.
• 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 safety and reliability.

Advantages and Disadvantages

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

Disadvantages: - Limited output current capacity (up to 1A). - Requires external components for complete power supply design.

Working Principles

The LNK564DG utilizes a primary-side control technique, where the feedback signal is obtained directly from the primary side of the power transformer. This eliminates the need for an optocoupler or secondary-side feedback circuitry, simplifying the design and reducing costs. The IC operates in a burst mode, which minimizes power consumption during light load conditions. It also incorporates various protection features to ensure safe and reliable operation.

Detailed Application Field Plans

The LNK564DG is commonly used in the following applications:

1. Power adapters for consumer electronics
2. LED lighting systems
3. Industrial power supplies
4. Home appliances
5. Battery chargers

Detailed and Complete Alternative Models

1. LNK562DG
2. LNK563DG
3. LNK565DG
4. LNK566DG
5. LNK567DG

These alternative models offer similar functionality and characteristics to the LNK564DG, providing flexibility in design choices.

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