Power Integrations
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LNK302DG
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LNK302DG

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 - Under-voltage lockout

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

Essence: LNK302DG is a power management IC designed for low power applications. It provides efficient and reliable power conversion in a compact package.

Packaging/Quantity: LNK302DG is typically sold in reels containing 2500 units per reel.

Specifications

  • Input Voltage Range: 85V AC to 265V AC
  • Output Voltage: 5V DC
  • Output Current: 100mA
  • Operating Temperature Range: -40°C to +125°C
  • Efficiency: Up to 85%
  • Standby Power Consumption: Less than 50mW

Pin Configuration

LNK302DG has the following pin configuration:

  1. VDD
  2. Drain
  3. Feedback
  4. Source
  5. Ground
  6. Control
  7. Sense

Functional Features

  • Primary-side control eliminates the need for an optocoupler
  • Built-in frequency jittering for reduced EMI emissions
  • Auto-restart protection feature for enhanced reliability
  • Accurate constant voltage output regulation
  • Protection against over-temperature, over-voltage, and under-voltage conditions

Advantages

  • Simplified circuit design due to primary-side control
  • Reduced component count and cost
  • Improved system reliability with auto-restart protection
  • Efficient power conversion resulting in energy savings
  • Wide input voltage range allows for universal compatibility

Disadvantages

  • Limited output current capability
  • Not suitable for high-power applications
  • Requires careful thermal management due to compact size

Working Principles

LNK302DG utilizes primary-side control to regulate the output voltage. It operates by modulating the duty cycle of the internal power switch based on the feedback received from the output voltage. This eliminates the need for an optocoupler, reducing cost and complexity.

The IC incorporates various protection features such as over-temperature, over-voltage, and under-voltage lockout to ensure safe operation. In case of a fault condition, the auto-restart protection feature activates, allowing the IC to recover automatically once the fault is resolved.

Detailed Application Field Plans

LNK302DG is commonly used in low-power applications that require efficient power conversion. Some typical application fields include:

  1. LED lighting systems
  2. Home appliances
  3. Consumer electronics
  4. Industrial controls
  5. Smart meters

Detailed and Complete Alternative Models

  1. LNK304DG
  2. LNK306DG
  3. LNK308DG
  4. LNK310DG

These alternative models offer similar functionality and characteristics to LNK302DG, but with varying specifications and package options.

In conclusion, LNK302DG is a power management IC that provides efficient and reliable power conversion in low-power applications. Its primary-side control, compact size, and built-in protection features make it suitable for a wide range of applications. However, its limited output current capability and thermal management requirements should be considered when selecting this IC for high-power applications.

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LNK302DG في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LNK302DG in technical solutions:

  1. Q: What is LNK302DG? A: LNK302DG is a highly integrated offline switcher IC designed for low-power applications, providing accurate constant voltage (CV) and constant current (CC) regulation.

  2. Q: What are the typical applications of LNK302DG? A: LNK302DG is commonly used in LED lighting, smart home devices, industrial controls, and other low-power applications that require efficient power conversion.

  3. Q: What is the input voltage range supported by LNK302DG? A: LNK302DG supports a wide input voltage range from 85VAC to 265VAC, making it suitable for global applications.

  4. Q: How does LNK302DG achieve high efficiency? A: LNK302DG utilizes a combination of primary-side control, advanced frequency jittering, and a proprietary EcoSmart technology to achieve high efficiency and minimize standby power consumption.

  5. Q: Can LNK302DG provide both constant voltage and constant current outputs? A: Yes, LNK302DG can be configured to provide either constant voltage or constant current output, depending on the application requirements.

  6. Q: Does LNK302DG have built-in protection features? A: Yes, LNK302DG incorporates various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  7. Q: What is the maximum output power that LNK302DG can handle? A: LNK302DG can handle a maximum output power of up to 12W, which makes it suitable for low-power applications.

  8. Q: Is LNK302DG compatible with dimming functionality for LED lighting applications? A: Yes, LNK302DG can be easily integrated with external dimming circuits to enable dimming functionality in LED lighting applications.

  9. Q: Can LNK302DG operate in a wide temperature range? A: Yes, LNK302DG is designed to operate reliably in a wide temperature range from -40°C to +150°C, ensuring its suitability for various environments.

  10. Q: Are there any reference designs available for LNK302DG? A: Yes, the manufacturer provides reference designs and application notes that help engineers implement LNK302DG in their technical solutions effectively.

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