仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | LinkSwitch®-TN |
| ProductStatus | Active |
| 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 |
概要
Description
The LNK302DG-TL is a power management integrated circuit (IC) from the LinkSwitch-TN series produced by Power Integrations. It's designed for low-power offline switcher applications, enabling efficient power conversion in small form factors. This IC integrates a power MOSFET, oscillator, high-voltage switch, and control circuitry, simplifying the design of power supplies by minimizing external components.
Key features include a monolithic design which reduces the overall system cost, enhanced energy efficiency, and the ability to operate in a wide range of input voltages. It supports applications such as chargers, LED drivers, and industrial controls. The LNK302DG-TL is known for its high reliability and is designed to comply with global energy efficiency standards.
The IC typically comes in a surface-mount package, making it suitable for compact designs. It also incorporates safety features like thermal shutdown and internal current limiting to protect against overload and fault conditions. This makes it a versatile and robust choice for developers working on low-power electronic applications.
Key features include a monolithic design which reduces the overall system cost, enhanced energy efficiency, and the ability to operate in a wide range of input voltages. It supports applications such as chargers, LED drivers, and industrial controls. The LNK302DG-TL is known for its high reliability and is designed to comply with global energy efficiency standards.
The IC typically comes in a surface-mount package, making it suitable for compact designs. It also incorporates safety features like thermal shutdown and internal current limiting to protect against overload and fault conditions. This makes it a versatile and robust choice for developers working on low-power electronic applications.
Features
The LNK302DG-TL is a switch-mode power supply IC designed for efficient and compact power conversion. Key features include:
1. Integrated Design: Combines a high-voltage power MOSFET, oscillator, high-voltage switched current source, current limit, and thermal shutdown circuitry, reducing external components.
2. Energy Efficiency: Offers low standby power consumption and high efficiency across a wide load range, making it suitable for energy-efficient applications.
3. Compact Package: Available in a surface-mount package, which is ideal for space-constrained designs.
4. Wide Input Voltage Range: Capable of operating over a broad input voltage range, supporting both low and high AC line conditions.
5. Current Limit: Includes a built-in current limit feature for overload protection, enhancing reliability.
6. Thermal Shutdown: Equipped with thermal shutdown protection to prevent overheating and ensure system safety.
7. Applications: Commonly used in small power supplies, chargers, adapters, and auxiliary supplies in appliances and industrial applications.
These features make the LNK302DG-TL a versatile and reliable choice for various low-power electronic devices.
1. Integrated Design: Combines a high-voltage power MOSFET, oscillator, high-voltage switched current source, current limit, and thermal shutdown circuitry, reducing external components.
2. Energy Efficiency: Offers low standby power consumption and high efficiency across a wide load range, making it suitable for energy-efficient applications.
3. Compact Package: Available in a surface-mount package, which is ideal for space-constrained designs.
4. Wide Input Voltage Range: Capable of operating over a broad input voltage range, supporting both low and high AC line conditions.
5. Current Limit: Includes a built-in current limit feature for overload protection, enhancing reliability.
6. Thermal Shutdown: Equipped with thermal shutdown protection to prevent overheating and ensure system safety.
7. Applications: Commonly used in small power supplies, chargers, adapters, and auxiliary supplies in appliances and industrial applications.
These features make the LNK302DG-TL a versatile and reliable choice for various low-power electronic devices.
Pinout
The LNK302DG-TL is a member of the LinkSwitch-TN series from Power Integrations, designed for low-power offline switcher applications. It typically comes in an SOT-223 package, featuring 4 pins. Here’s a brief rundown of its pin functions:
1. D (Drain): This pin connects to the input rectified DC voltage and is the power switch drain terminal. It serves as the high-voltage power input.
2. BP (Bypass): This pin connects to an external bypass capacitor, which is critical for the device's internal oscillator and control circuitry, ensuring stable operation.
3. S (Source): This pin is the ground reference for the device and is connected to the return path of the power supply circuit. It serves as the source of the internal MOSFET switch.
4. FB (Feedback): This pin receives feedback from the output voltage, allowing the device to regulate the output by adjusting the switching frequency.
The LNK302DG-TL is used for non-isolated, low-power applications requiring high efficiency and simplicity, such as chargers, consumer electronics, and home appliances.
1. D (Drain): This pin connects to the input rectified DC voltage and is the power switch drain terminal. It serves as the high-voltage power input.
2. BP (Bypass): This pin connects to an external bypass capacitor, which is critical for the device's internal oscillator and control circuitry, ensuring stable operation.
3. S (Source): This pin is the ground reference for the device and is connected to the return path of the power supply circuit. It serves as the source of the internal MOSFET switch.
4. FB (Feedback): This pin receives feedback from the output voltage, allowing the device to regulate the output by adjusting the switching frequency.
The LNK302DG-TL is used for non-isolated, low-power applications requiring high efficiency and simplicity, such as chargers, consumer electronics, and home appliances.
Manufacturer
The LNK302DG-TL is manufactured by Power Integrations, Inc. Power Integrations is a semiconductor company that specializes in the design and development of high-performance electronic components for power conversion systems. They are known for their innovative products that are used in a wide range of applications, including consumer electronics, appliances, industrial applications, and renewable energy systems. The company's technologies focus on efficiency and reliability, helping reduce energy consumption and electronic waste.
Application
The LNK302DG-TL is a highly integrated monolithic switching regulator optimized for low-power applications. It is commonly used in:
1. Power Supplies for Appliances: Provides efficient power conversion for small appliances such as microwave ovens and refrigerators.
2. LED Drivers: Drives low-wattage LED circuits efficiently in various lighting applications.
3. Standby Power Supplies: Used in standby modes for TVs, DVDs, and other consumer electronics to reduce power consumption.
4. Battery Chargers: Powers small battery charger circuits for devices like phones and portable gadgets.
5. Low-Power Adapters: Serves as an adapter for low-power devices, ensuring energy efficiency.
Its primary appeal lies in simplifying circuit designs while delivering high efficiency and reliability.
1. Power Supplies for Appliances: Provides efficient power conversion for small appliances such as microwave ovens and refrigerators.
2. LED Drivers: Drives low-wattage LED circuits efficiently in various lighting applications.
3. Standby Power Supplies: Used in standby modes for TVs, DVDs, and other consumer electronics to reduce power consumption.
4. Battery Chargers: Powers small battery charger circuits for devices like phones and portable gadgets.
5. Low-Power Adapters: Serves as an adapter for low-power devices, ensuring energy efficiency.
Its primary appeal lies in simplifying circuit designs while delivering high efficiency and reliability.
Package
The LNK302DG-TL is a Power Integrations product and comes in an SOIC-8 package, which is a small-outline integrated circuit with 8 pins. This package type is commonly used for surface-mount technology on printed circuit boards.
