Power Integrations
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LNK626PG
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LNK626PG

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: PG-DIP-7

Essence: LNK626PG is a power management integrated circuit designed for efficient power conversion and control.

Packaging/Quantity: The LNK626PG is available in a standard PG-DIP-7 package. It is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 85V AC to 265V AC
  • Output Power: Up to 5W
  • Output Voltage: 5V DC
  • Efficiency: Up to 85%
  • Operating Temperature Range: -40°C to +150°C
  • Frequency Range: 66 kHz to 132 kHz
  • Standby Power Consumption: Less than 30 mW

Detailed Pin Configuration

The LNK626PG has the following pin configuration:

  1. VDD: Power supply input
  2. BP/M: Bypass/Multifunction pin
  3. FB: Feedback pin
  4. GND: Ground
  5. D: Drain pin
  6. S: Source pin
  7. NC: No connection

Functional Features

  1. Primary-Side Control: The LNK626PG utilizes primary-side control to regulate the output voltage, eliminating the need for an optocoupler or secondary-side feedback circuitry.
  2. Auto-restart Protection: In the event of a fault condition such as over-temperature, over-voltage, or short-circuit, the LNK626PG automatically enters into auto-restart mode to protect the system.
  3. Frequency Jittering: The IC incorporates frequency jittering to reduce electromagnetic interference (EMI) and meet regulatory standards.
  4. Cycle-by-Cycle Current Limiting: The LNK626PG ensures accurate current limiting by monitoring the current on a cycle-by-cycle basis, providing reliable protection against overloads.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Compact size for space-constrained applications - Wide input voltage range for universal compatibility - Built-in protection features for enhanced reliability - Primary-side control eliminates the need for optocouplers

Disadvantages: - Limited output power (up to 5W) - Requires external components for complete power supply design

Working Principles

The LNK626PG is based on the LinkSwitch-TN2 topology, which integrates a high-voltage power MOSFET, a multi-mode PWM controller, and a high-voltage start-up circuitry into a single chip. It operates by converting the high-voltage AC input into a regulated low-voltage DC output through a combination of switching and control techniques.

The primary-side control architecture eliminates the need for an optocoupler, reducing component count and cost while improving overall system reliability. The IC utilizes various protection mechanisms such as over-temperature, over-voltage, and short-circuit protection to safeguard the system from faults.

Detailed Application Field Plans

The LNK626PG is widely used in various applications, including but not limited to: - Power adapters - LED lighting - Auxiliary power supplies - Industrial controls - Home appliances

Its compact size, high efficiency, and built-in protection features make it suitable for a wide range of power management applications.

Detailed and Complete Alternative Models

  1. LNK625PG: Similar to LNK626PG but with lower output power capability (up to 3W).
  2. LNK627PG: Similar to LNK626PG but with higher output power capability (up to 8W).
  3. LNK628PG: Similar to LNK626PG but with additional features such as adjustable output voltage and current limiting.

These alternative models provide flexibility in power supply design based on specific application requirements.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LNK626PG في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LNK626PG in technical solutions:

  1. Q: What is LNK626PG? A: LNK626PG is a highly integrated, offline switcher IC designed for low-power applications.

  2. Q: What are the key features of LNK626PG? A: LNK626PG features include primary-side regulation, high efficiency, accurate constant voltage (CV) and constant current (CC) control, and built-in protection features.

  3. Q: What are the typical applications of LNK626PG? A: LNK626PG is commonly used in LED lighting, smart home devices, IoT applications, and other low-power electronic systems.

  4. Q: How does LNK626PG achieve primary-side regulation? A: LNK626PG uses a proprietary algorithm called EcoSmart™ technology that enables primary-side regulation, eliminating the need for an optocoupler or secondary feedback circuitry.

  5. Q: Can LNK626PG operate in a wide input voltage range? A: Yes, LNK626PG can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  6. Q: Does LNK626PG support dimming functionality for LED lighting applications? A: Yes, LNK626PG supports both analog and PWM dimming methods, making it suitable for various LED lighting designs.

  7. Q: What are the built-in protection features of LNK626PG? A: LNK626PG includes features like output overvoltage protection (OVP), output short-circuit protection (SCP), and thermal shutdown protection (TSD).

  8. Q: Is LNK626PG compliant with safety standards? A: Yes, LNK626PG is designed to meet international safety standards such as UL, CE, and ENEC.

  9. Q: Can LNK626PG be used in battery-powered applications? A: No, LNK626PG is primarily designed for offline applications and requires an AC power source.

  10. Q: Are there any evaluation boards or reference designs available for LNK626PG? A: Yes, Power Integrations provides evaluation boards and reference designs that can help engineers quickly prototype and implement LNK626PG-based solutions.

Please note that the answers provided here are general and may vary depending on specific application requirements.