LNK626DG-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 - Over-voltage protection - Under-voltage lockout

Package: DFN-8 (Dual Flat No-Lead)

Essence: LNK626DG-TL is a power management IC designed to provide efficient and reliable power conversion for various electronic devices.

Packaging/Quantity: The LNK626DG-TL is typically packaged in reels containing 3000 units per reel.

Specifications

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 1.5A
• Switching Frequency: 132 kHz
• Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The LNK626DG-TL features the following pin configuration:

1. VDD: Power supply input
2. BP/M: Brown-in, positive feedback connection
3. FB: Feedback input
4. GND: Ground reference
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 regulation (PSR) 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.
• Built-in frequency jittering reduces electromagnetic interference (EMI).
• Accurate constant output voltage regulation.
• High efficiency over a wide load range.

Advantages

• Simplified design due to primary-side regulation.
• Enhanced reliability with built-in protection features.
• Reduced component count and cost.
• Improved energy efficiency.
• Compact size allows for space-saving designs.

Disadvantages

• Limited output current compared to some alternative models.
• Higher cost compared to non-integrated power management solutions.
• Requires careful consideration of thermal management due to the operating temperature range.

Working Principles

The LNK626DG-TL utilizes a flyback topology to convert the high-voltage AC input into a regulated low-voltage DC output. The primary-side regulation eliminates the need for an optocoupler or secondary-side feedback circuitry, simplifying the design and reducing costs. The IC operates by controlling the duty cycle of the internal power MOSFET to regulate the output voltage.

Detailed Application Field Plans

The LNK626DG-TL is widely used in various applications, including but not limited to: - Power adapters - LED lighting - Home appliances - Industrial equipment - Consumer electronics

Detailed and Complete Alternative Models

1. LNK625DG-TL: Similar specifications and features, suitable for lower power applications.
2. LNK627DG-TL: Higher output current capability, suitable for applications requiring higher power levels.
3. LNK628DG-TL: Enhanced protection features, suitable for demanding environments.

These alternative models provide flexibility in choosing the most suitable power management solution based on specific application requirements.

In conclusion, the LNK626DG-TL is a versatile power management IC that offers efficient and reliable power conversion for a wide range of electronic devices. Its primary-side regulation, compact size, and built-in protection features make it an excellent choice for various applications. However, designers should consider its limitations in terms of output current and thermal management.