LNK304GN
Product Overview
Category: Integrated Circuit (IC)
Use: Power Management IC
Characteristics: - Low-cost, energy-efficient power conversion solution - Designed for offline power supplies in a wide range of applications - Provides accurate constant voltage (CV) and constant current (CC) regulation - Offers protection features such as overvoltage, overcurrent, and thermal shutdown - Enables compact and reliable power supply designs
Package: SMD (Surface Mount Device)
Essence: LNK304GN is a highly integrated power management IC that combines a power switch, controller, and protection circuitry into a single package. It simplifies the design process and reduces component count, making it an ideal choice for cost-effective power supply solutions.
Packaging/Quantity: LNK304GN is available in a small outline SMD package. The quantity per reel may vary depending on the manufacturer.
Specifications
- Input Voltage Range: 85VAC to 265VAC
- Output Power: Up to 10W
- Output Voltage: Configurable (based on external components)
- Switching Frequency: 66 kHz (typical)
- Efficiency: Up to 85%
- Operating Temperature Range: -40°C to +150°C
Pin Configuration
The LNK304GN IC has the following pin configuration:
- VDD: Power supply input
- BP/M: Bypass/Multifunction pin
- FB: Feedback pin for output voltage regulation
- GND: Ground reference
- D: Drain pin for power switch
- S: Source pin for power switch
Functional Features
- Primary-side control eliminates the need for an optocoupler or secondary-side feedback circuitry.
- Auto-restart feature ensures continuous operation even in the presence of faults.
- Frequency jittering reduces EMI (Electromagnetic Interference) emissions.
- Built-in protection features safeguard against abnormal operating conditions, enhancing system reliability.
Advantages and Disadvantages
Advantages: - Cost-effective solution for offline power supplies - Simplified design process with integrated functions - Compact size enables space-efficient designs - High efficiency for energy-saving applications - Reliable performance with built-in protection features
Disadvantages: - Limited output power range (up to 10W) - Fixed switching frequency may not be suitable for all applications - Requires external components for voltage regulation
Working Principles
The LNK304GN operates on the principle of primary-side control. It uses a flyback topology to convert the high-voltage AC input into a regulated DC output. The IC integrates a power switch, controller, and protection circuitry, eliminating the need for an optocoupler or secondary-side feedback circuitry. By adjusting the duty cycle of the power switch, the IC regulates the output voltage and current. The auto-restart feature ensures continuous operation by detecting and recovering from faults.
Detailed Application Field Plans
The LNK304GN is widely used in various applications, including but not limited to: - LED lighting - Consumer electronics - Home appliances - Industrial equipment - Power adapters
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to LNK304GN are: - LNK302GN - LNK303GN - LNK305GN - LNK306GN
These alternative models provide different specifications and features, allowing designers to choose the most suitable option based on their specific requirements.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LNK304GN i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of LNK304GN in technical solutions:
Q: What is LNK304GN? A: LNK304GN is an integrated offline switcher IC (integrated circuit) designed for low-power applications.
Q: What are the typical applications of LNK304GN? A: LNK304GN is commonly used in applications such as LED lighting, smart home devices, power adapters, and industrial controls.
Q: What is the input voltage range supported by LNK304GN? A: LNK304GN supports a wide input voltage range from 85V AC to 265V AC.
Q: What is the maximum output power that can be achieved with LNK304GN? A: The maximum output power depends on the specific design and external components used, but typically it can support up to 12W.
Q: Does LNK304GN require an external MOSFET? A: No, LNK304GN integrates a high-voltage power MOSFET, eliminating the need for an external one.
Q: Is LNK304GN suitable for dimmable LED lighting applications? A: Yes, LNK304GN can be used in dimmable LED lighting applications when combined with appropriate external components.
Q: Can LNK304GN operate in a wide temperature range? A: Yes, LNK304GN has a wide operating temperature range of -40°C to +150°C, making it suitable for various environments.
Q: Does LNK304GN have built-in protection features? A: Yes, LNK304GN includes multiple built-in protection features such as over-temperature protection, output short-circuit protection, and overvoltage protection.
Q: What is the typical efficiency of LNK304GN? A: The typical efficiency of LNK304GN can reach up to 85%, depending on the specific application and operating conditions.
Q: Are there any reference designs available for LNK304GN? A: Yes, Power Integrations, the manufacturer of LNK304GN, provides various reference designs and application notes that can help in implementing the IC in different technical solutions.
Please note that these answers are general and may vary depending on the specific implementation and design considerations.