LNK6775E

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low standby power consumption - Wide input voltage range - Over-temperature protection - Over-voltage protection - Over-current protection

Package: DIP-8 (Dual In-line Package, 8 pins)

Essence: The LNK6775E is a power management IC designed for efficient and reliable power conversion in various applications.

Packaging/Quantity: The LNK6775E is typically sold in reels containing 2500 units per reel.

Specifications

The LNK6775E has the following specifications:

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 1.2A
• Switching Frequency: 132 kHz
• Standby Power Consumption: Less than 30 mW
• Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The LNK6775E features an 8-pin Dual In-line Package (DIP-8) with the following pin configuration:

1. VDD: Power supply input
2. BP/M: Bypass/Multiplier pin
3. FB: Feedback pin
4. GND: Ground
5. VOUT: Output voltage
6. EN/UVLO: Enable/Undervoltage Lockout pin
7. DRAIN: Power switch drain
8. SOURCE: Power switch source

Functional Features

The LNK6775E offers the following 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 fault conditions.
• Frequency jittering reduces EMI emissions.
• Built-in over-temperature, over-voltage, and over-current protection enhance system reliability.
• Low standby power consumption meets energy-saving requirements.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Simplified circuit design due to primary-side control - Wide input voltage range allows for universal compatibility - Robust protection features ensure system safety - Low standby power consumption reduces energy waste

Disadvantages: - Limited output current capacity (up to 1.2A) - Requires external components for complete power supply design

Working Principles

The LNK6775E utilizes a primary-side control architecture to regulate the output voltage. It integrates a high-voltage power MOSFET, a controller, and various protection circuits into a single IC. The controller adjusts the duty cycle of the power MOSFET based on the feedback signal received from the output voltage. This closed-loop control mechanism ensures stable and accurate output voltage regulation.

Detailed Application Field Plans

The LNK6775E is widely used in various applications, including but not limited to:

1. Power adapters for consumer electronics
2. LED lighting drivers
3. Industrial power supplies
4. Home appliances
5. Smart home devices

Detailed and Complete Alternative Models

1. LNK6776E: Similar to LNK6775E with higher output current capacity (up to 2A).
2. LNK6774E: Similar to LNK6775E with lower output current capacity (up to 0.8A).
3. LNK6777E: Similar to LNK6775E with additional features such as adjustable output voltage and frequency synchronization.

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

In conclusion, the LNK6775E is a highly efficient power management IC designed for various applications. Its primary-side control architecture, robust protection features, and wide input voltage range make it a reliable choice for power conversion needs. With its compact DIP-8 package, the LNK6775E offers ease of integration into different systems.