Specifications
| Attribute | Value |
| Package | Tube |
| Series | LinkSwitch®-TN |
| ProductStatus | Discontinued at Digi-Key |
| OutputIsolation | Non-Isolated |
| InternalSwitch(s) | Yes |
| Voltage-Breakdown | 700V |
| Topology | Buck, Buck-Boost, Flyback |
| DutyCycle | 69% |
| Frequency-Switching | 66kHz |
| FaultProtection | Current Limiting, Open Loop, Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| Package/Case | 8-SOIC (0.154, 3.90mm Width), 7 Leads |
| SupplierDevicePackage | SO-8C |
Overview
Description
The LNK304DG is a member of the LinkSwitch-TN family, designed by Power Integrations, to provide cost-effective, compact, and energy-efficient power conversion. Primarily used in non-isolated AC-DC power supply applications, it integrates a 700V power MOSFET, oscillator, high-voltage switching current source, and control circuitry onto a single silicon chip.
Key features of the LNK304DG include its ability to operate from a wide input voltage range of 85 to 265 VAC, which makes it suitable for global applications. It supports power outputs up to 4.5W for 230VAC and 2.3W for 85-265VAC. The device is known for its high efficiency and low standby power consumption, which meets stringent energy-saving standards.
Protection features include auto-restart for short circuit and thermal overload protection, ensuring reliability and safety. Its simple design reduces the need for external components, facilitating compact and cost-effective circuits. The LNK304DG is typically used in applications such as chargers, LED drivers, industrial control systems, and household appliances.
Key features of the LNK304DG include its ability to operate from a wide input voltage range of 85 to 265 VAC, which makes it suitable for global applications. It supports power outputs up to 4.5W for 230VAC and 2.3W for 85-265VAC. The device is known for its high efficiency and low standby power consumption, which meets stringent energy-saving standards.
Protection features include auto-restart for short circuit and thermal overload protection, ensuring reliability and safety. Its simple design reduces the need for external components, facilitating compact and cost-effective circuits. The LNK304DG is typically used in applications such as chargers, LED drivers, industrial control systems, and household appliances.
Equivalent
The LNK304DG chip, a member of the LinkSwitch-TN family by Power Integrations, is typically interchangeable with similar low-power switcher ICs. Equivalent products include:
1. TOPSwitch series ICs (e.g., TOP232-234) by Power Integrations.
2. NCP101x series by ON Semiconductor.
3. VIPer series (e.g., VIPer12A, VIPer22A) by STMicroelectronics.
Ensure these alternatives meet the specific electrical specifications and pin configurations required for your application.
1. TOPSwitch series ICs (e.g., TOP232-234) by Power Integrations.
2. NCP101x series by ON Semiconductor.
3. VIPer series (e.g., VIPer12A, VIPer22A) by STMicroelectronics.
Ensure these alternatives meet the specific electrical specifications and pin configurations required for your application.
Features
The LNK304DG is a member of the LinkSwitch-TN series of integrated circuit solutions by Power Integrations, designed for off-line switch-mode power supplies. Key features include:
1. High Efficiency: The device offers high energy efficiency across a wide load range, which helps in reducing energy consumption and heat generation.
2. Low Standby Power: It is designed for applications requiring low standby power, making it suitable for energy-efficient applications.
3. Integrated MOSFET: Comes with an integrated 700V power MOSFET, minimizing component count and simplifying the design process.
4. Current Limit and Over-Temperature Protection: Offers built-in current limit, thermal shutdown, and over-temperature protection for enhanced safety and reliability.
5. Auto-Restart Functionality: Provides auto-restart for short circuit and open loop fault protection, enhancing system robustness.
6. Simple Design: Requires fewer external components, reducing cost and complexity in power supply designs.
The LNK304DG is suitable for applications such as small power adapters, auxiliary supplies, and other low-power electronic devices.
1. High Efficiency: The device offers high energy efficiency across a wide load range, which helps in reducing energy consumption and heat generation.
2. Low Standby Power: It is designed for applications requiring low standby power, making it suitable for energy-efficient applications.
3. Integrated MOSFET: Comes with an integrated 700V power MOSFET, minimizing component count and simplifying the design process.
4. Current Limit and Over-Temperature Protection: Offers built-in current limit, thermal shutdown, and over-temperature protection for enhanced safety and reliability.
5. Auto-Restart Functionality: Provides auto-restart for short circuit and open loop fault protection, enhancing system robustness.
6. Simple Design: Requires fewer external components, reducing cost and complexity in power supply designs.
The LNK304DG is suitable for applications such as small power adapters, auxiliary supplies, and other low-power electronic devices.
Pinout
The LNK304DG is an integrated circuit from Power Integrations, part of the LinkSwitch-TN series. It is designed for low-power offline switcher applications. The LNK304DG typically comes in an 8-pin SO-8 package. Here's a brief overview of its pin functions:
1. BP (Bypass) - Pin 1: Connects to a bypass capacitor for internal supply voltage stabilization.
2. S (Source) - Pins 2, 3, 6, 7: These pins are connected internally and serve as the return path for the primary side circuit.
3. D (Drain) - Pin 8: Connects to the high-voltage DC input and drives the transformer or inductor.
4. FB (Feedback) - Pin 4: Used for feedback control, regulating the output voltage by adjusting the switching frequency.
5. N/C (No Connection) - Pin 5: This pin is not internally connected and is typically unused.
The LNK304DG offers high efficiency and integrates several protection features, such as over-temperature and over-current protection, making it suitable for high-voltage DC-DC conversion in compact spaces.
1. BP (Bypass) - Pin 1: Connects to a bypass capacitor for internal supply voltage stabilization.
2. S (Source) - Pins 2, 3, 6, 7: These pins are connected internally and serve as the return path for the primary side circuit.
3. D (Drain) - Pin 8: Connects to the high-voltage DC input and drives the transformer or inductor.
4. FB (Feedback) - Pin 4: Used for feedback control, regulating the output voltage by adjusting the switching frequency.
5. N/C (No Connection) - Pin 5: This pin is not internally connected and is typically unused.
The LNK304DG offers high efficiency and integrates several protection features, such as over-temperature and over-current protection, making it suitable for high-voltage DC-DC conversion in compact spaces.
Manufacturer
The LNK304DG is manufactured by Power Integrations, Inc. Power Integrations is a semiconductor company that specializes in the development and production of high-performance components used in power conversion systems. Their products are widely utilized in various applications, including power supplies, consumer electronics, industrial systems, and renewable energy technologies. The company is known for its innovative technologies that enhance energy efficiency and reduce electronic waste, aligning with the growing demand for eco-friendly and sustainable solutions in the electronics industry.
Application
The LNK304DG is a monolithic AC-DC power conversion IC, typically used in applications requiring low power consumption and high efficiency. Its primary applications include small power supplies for household appliances, IoT devices, standby power supplies, and LED drivers. It is also utilized in chargers and adapters for small electronic devices, such as mobile phones and tablets. The LNK304DG is valued for its compact size and ability to simplify design by reducing the number of external components needed, making it ideal for low-cost, space-constrained, and energy-efficient designs.
Package
The LNK304DG is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package, also known as SO-8. This surface-mount package is compact and commonly used for integrating circuits in electronic devices, providing a balance between size and performance.
