LNK584DG-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-current protection

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

Essence: The LNK584DG-TL is a power management IC designed to provide efficient and reliable power conversion in various electronic devices.

Packaging/Quantity: The LNK584DG-TL is typically sold in reels, with each reel containing 3000 units of the IC.

Specifications

The LNK584DG-TL has the following specifications:

• Input Voltage Range: 85V - 265V AC
• Output Voltage: 5V DC
• Output Current: Up to 1A
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +125°C
• Storage Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The LNK584DG-TL features an 8-pin Dual Flat No-Lead (DFN-8) package. The pin configuration is as follows:

1. VCC: Power supply input
2. BP/MODE: Bootstrap/MODE selection pin
3. FB: Feedback pin for output voltage regulation
4. GND: Ground reference
5. DRAIN: High-voltage power MOSFET drain connection
6. SOURCE: High-voltage power MOSFET source connection
7. VDD: Internal bias supply
8. NC: No connection

Functional Features

The LNK584DG-TL 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 in the event of a fault condition
• Frequency jittering reduces EMI emissions
• Cycle-by-cycle current limit provides accurate and reliable over-current protection

Advantages and Disadvantages

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

Disadvantages: - Limited output current capacity (up to 1A) - Requires careful thermal management due to high operating temperature range

Working Principles

The LNK584DG-TL utilizes primary-side control, where the feedback signal is derived from the primary side of the power conversion circuit. This eliminates the need for an optocoupler or secondary-side feedback circuitry, simplifying the design and reducing component count.

The IC operates by regulating the duty cycle of the power MOSFET based on the feedback signal received from the FB pin. This ensures a stable output voltage despite variations in input voltage and load conditions.

In the event of a fault condition such as over-temperature or over-current, the auto-restart protection feature activates, allowing the IC to resume normal operation once the fault is cleared.

Detailed Application Field Plans

The LNK584DG-TL is widely used in various applications that require efficient power management, including:

1. Consumer Electronics:

   • Power adapters
   • Set-top boxes
   • Audio amplifiers
   • LED lighting

2. Industrial Equipment:

   • Motor drives
   • Power supplies
   • HVAC systems
   • Factory automation

3. Automotive Electronics:

   • On-board chargers
   • LED headlights
   • Electric vehicle power systems

4. Telecommunications:

   • Base stations
   • Network switches
   • Wireless routers

Detailed and Complete Alternative Models

1. LNK584EG-TL
2. LNK584FG-TL
3. LNK584HG-TL
4. LNK584IG-TL

These alternative models offer similar functionality and characteristics to the LNK584DG-TL, providing flexibility in design choices.

In conclusion, the LNK584DG-TL is a versatile power management IC that offers high efficiency, compact size, and reliable performance. Its primary-side control, along with various protection features, makes it suitable for a wide range of applications in different industries.

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