LNK6407D

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 - Short-circuit protection

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

Essence: LNK6407D is a power management IC designed to provide efficient and reliable power conversion for various electronic devices.

Packaging/Quantity: The LNK6407D is typically packaged in reels or tubes containing 1000 units per package.

Specifications

The LNK6407D has the following specifications:

• Input Voltage Range: 85V AC to 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 1A
• Efficiency: Up to 85%
• Operating Temperature Range: -40°C to +150°C
• Storage Temperature Range: -55°C to +150°C

Pin Configuration

The LNK6407D 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. NC: No connection
8. Drain: Power switch drain

Functional Features

The LNK6407D offers the following functional features:

• Primary-side control eliminates the need for optocouplers and 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, over-voltage, and short-circuit protection enhance system reliability.

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. - Integrated protection features enhance system safety and reliability. - Primary-side control simplifies circuit design and reduces component count.

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 LNK6407D utilizes primary-side regulation (PSR) technology to achieve accurate and efficient power conversion. It integrates a power switch, high-voltage startup circuitry, and control circuitry into a single chip. The IC operates by modulating the duty cycle of the power switch based on the feedback received from the output voltage. This closed-loop control mechanism ensures stable and regulated output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The LNK6407D is widely used in various applications, including but not limited to:

1. Power adapters for consumer electronics
2. LED lighting systems
3. Industrial control systems
4. Home automation devices
5. Battery chargers
6. Audio amplifiers
7. Medical equipment

Detailed and Complete Alternative Models

1. LNK6407E: Similar to LNK6407D, but with higher output current capability (up to 2A).
2. LNK6407F: Enhanced version with additional protection features, such as over-current protection and thermal shutdown.
3. LNK6407G: Low-profile package variant suitable for space-constrained applications.
4. LNK6407H: Adjustable output voltage version with a wide voltage range.

These alternative models provide flexibility and cater to specific design requirements.

In conclusion, the LNK6407D is a power management IC that offers high efficiency, compact size, and reliable performance. Its primary-side control, integrated protection features, and wide application field make it a popular choice for various electronic devices.