Power Integrations
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LNK304PN
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LNK304PN

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low-cost, energy-efficient power conversion solution - Designed for offline flyback converters - Suitable for applications requiring output power up to 10 W - Provides accurate constant voltage (CV) and constant current (CC) regulation

Package: DIP-7 (Dual In-line Package)

Essence: The LNK304PN is a highly integrated power management IC that offers a cost-effective solution for offline flyback converters. It provides reliable and efficient power conversion for various applications.

Packaging/Quantity: The LNK304PN is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

The LNK304PN has the following specifications:

  • Input Voltage Range: 85 VAC to 265 VAC
  • Output Power Range: Up to 10 W
  • Output Voltage Range: 3.6 V to 28 V
  • Maximum Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C

Pin Configuration

The LNK304PN features a DIP-7 package with the following pin configuration:

  1. Drain (D)
  2. Source (S)
  3. Feedback (F)
  4. Ground (GND)
  5. Control (C)
  6. Sense (S)
  7. Vcc (V)

Functional Features

The LNK304PN offers the following functional features:

  • Primary-side control eliminates the need for an optocoupler and secondary-side feedback components, reducing system cost and complexity.
  • Auto-restart protection ensures safe operation by automatically restarting the converter in the event of a fault condition.
  • Accurate CV and CC regulation enables precise control of the output voltage and current, ensuring stable and reliable power delivery.

Advantages and Disadvantages

Advantages: - Cost-effective solution for offline flyback converters - High level of integration reduces component count and system complexity - Reliable and efficient power conversion - Auto-restart protection enhances system safety

Disadvantages: - Limited output power range (up to 10 W) - Restricted input voltage range (85 VAC to 265 VAC)

Working Principles

The LNK304PN operates on the principle of primary-side control, where the control circuitry is integrated on the primary side of the converter. This eliminates the need for an optocoupler and secondary-side feedback components, reducing cost and complexity. The IC regulates the output voltage and current by adjusting the duty cycle of the internal power switch based on the feedback signal.

Detailed Application Field Plans

The LNK304PN is commonly used in various applications, including but not limited to:

  1. LED Lighting: Provides efficient power conversion for LED lighting systems, ensuring stable illumination.
  2. Consumer Electronics: Used in low-power consumer electronic devices such as set-top boxes, audio/video equipment, and small appliances.
  3. Industrial Equipment: Suitable for powering industrial equipment, control systems, and instrumentation.
  4. Home Automation: Enables energy-efficient power management in home automation systems, including smart lighting and HVAC controls.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LNK304PN are:

  1. LNK302PN
  2. LNK303PN
  3. LNK305PN
  4. LNK306PN

These models offer similar functionality and characteristics, providing flexibility in choosing the most suitable power management IC for specific applications.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von LNK304PN in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of LNK304PN in technical solutions:

  1. Q: What is LNK304PN? A: LNK304PN is an integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of LNK304PN? A: LNK304PN is commonly used in applications such as LED lighting, power adapters, and battery chargers.

  3. Q: What is the input voltage range supported by LNK304PN? A: LNK304PN supports a wide input voltage range from 85V AC to 265V AC.

  4. Q: What is the maximum output power that can be achieved with LNK304PN? A: The maximum output power depends on the specific design and external components used, but it typically ranges from 3W to 15W.

  5. Q: Does LNK304PN require an external MOSFET? A: No, LNK304PN integrates a high-voltage power MOSFET, eliminating the need for an external one.

  6. Q: Can LNK304PN operate in a constant current mode? A: Yes, LNK304PN can be configured to operate in a constant current mode, making it suitable for driving LEDs.

  7. Q: Is LNK304PN capable of providing overvoltage protection? A: Yes, LNK304PN includes built-in overvoltage protection, ensuring the safety of the connected load.

  8. Q: What is the operating frequency of LNK304PN? A: LNK304PN operates at a fixed frequency of approximately 132 kHz.

  9. Q: Does LNK304PN have built-in thermal shutdown protection? A: Yes, LNK304PN incorporates thermal shutdown protection to prevent overheating and ensure safe operation.

  10. Q: Can LNK304PN be used in dimmable lighting applications? A: No, LNK304PN is not designed for dimmable lighting applications. For dimming functionality, a different IC or solution would be required.

Please note that these answers are general and may vary depending on the specific application and design considerations.