Part Number: LNK302GN-TL

Manufacturer: Power Integrations


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of LNK302GN-TL

Datasheet  LNK302GN-TL datasheet
Category Integrated Circuits (ICs)
Family PMIC – AC DC Converters, Offline Switchers
Manufacturer Power Integrations
Series LinkSwitch?-TN
Packaging Tape & Reel (TR)
Part Status Active
Output Isolation Non-Isolated
Internal Switch(s) Yes
Voltage – Breakdown 700V
Topology Buck, Buck-Boost, Flyback
Voltage – Start Up
Voltage – Supply (Vcc/Vdd)
Duty Cycle 69%
Frequency – Switching 66kHz
Power (Watts)
Fault Protection Current Limiting, Open Loop, Over Temperature, Short Circuit
Control Features
Operating Temperature -40°C ~ 150°C (TJ)
Package / Case 8-SMD (7 Leads), Gull Wing
Supplier Device Package SMD-8B
Mounting Type Surface Mount


When developing power supply in today’s fast-paced technological world, efficiency, dependability, and cost-effectiveness are critical factors. The LNK302GN-TL, a member of the LinkSwitchTM-TN family, is a fascinating semiconductor device that promises to change the way we think about non-isolated power supply with output currents less than 360 mA. In this comprehensive guide, we’ll look at the LNK302GN-TL, its characteristics, uses, and how it can change the way you design power supplies.

Unlocking the Potential of LNK302GN-TL: A Breakdown of Product Highlights

The LinkSwitchTM-TN family’s LNK302GN-TL is more than simply an integrated circuit; it’s a game changer in the world of power supplies. With a plethora of features and capabilities, it has the potential to change the way we build and use non-isolated power supply in a variety of applications. In this comprehensive study, we look at the LNK302GN-TL’s product features, demonstrating why it’s a standout choice for cost-effective, energy-efficient, and high-performance power solutions.

Product Highlights

Replacement Linear/Cap Dropper at a Low Cost

Lowest component cost and component count Buck Converter Alternative

  • The LNK302GN-TL is the most cost-effective buck converter solution, providing not just affordability but also efficiency.

Fully Integrated Fault Protection Auto-Restart

  • Say goodbye to the costs of external components. The LNK302GN-TL has fully integrated auto-restart capabilities for short-circuit and open-loop fault protection.

Simplified Controller for Exceptionally Low System Cost

  • The LNK302 variation provides a simpler controller without auto-restart, offering a cost-effective solution for projects on a restricted budget.

High productivity at a low cost

  • This IC, which operates at 66 kHz and has an exact current limit, enables the use of off-the-shelf 1 mH inductors for up to 120 mA output current, maximizing cost-effectiveness.

Accuracy and consistency

  • The LNK302GN-TL provides steady and reliable performance thanks to tight tolerances and little temperature change.

Effective Input Surge Protection

  • This IC, with a high breakdown voltage of 700 V, provides outstanding input surge protection, extending the life of your power supply systems.

Reduced EMI for Improved Performance

  • Frequency jittering decreases electromagnetic interference (EMI) by approximately 10 dB, reducing the need for expensive EMI filters.

High Thermal Shutdown Temperature for Safety

  • The LNK302GN-TL has a minimum thermal shutdown temperature of +135°C, assuring the safety and reliability of your systems even in harsh conditions.
  • Significantly better performance than discrete buck and passive solutions – Versatility across topologies
  • The LNK302GN-TL offers a variety of topologies, including buck, buck-boost, and flyback, making it adaptable to a wide range of application requirements.

Comprehensive Defense

  • Enjoy peace of mind knowing that your equipment is protected from unexpected failures by system-level thermal overload, output short-circuit, and open-control loop protection.

Exact Regulation with No Compromises

  • Even with standard configurations, you may achieve good line and load management, assuring steady power delivery.

Quick On/Off with No Overshoot

  • The LNK302GN-TL’s high bandwidth ensures fast turn-on without undesired overrun, preventing voltage spikes that could harm sensitive components.

Rejection of Line Ripple

  • The use of a current limit efficiently rejects line ripple, improving the stability of your power supply systems.

Wide Input Voltage Range

  • The LNK302GN-TL is appropriate for global applications, with a wide universal input voltage range of 85 VAC to 265 VAC, enabling flexibility and ease of use.

Integrated Safety Measures

● Take use of built-in current limits and hysteretic thermal protection, which give an extra degree of security to your systems.

Efficiency Is Important

  • The LNK302GN-TL is more efficient than passive alternatives, decreasing energy waste and running expenses.

Increased Power Factor

  • This IC has a larger power factor than capacitor-fed alternatives, which contributes to improved energy utilization and lower harmonic distortion.

Manufacturing Simplified

  • Surface-mount device (SMD) compatibility makes manufacturing a breeze, expediting the production process.

EcoSmartTM is extremely energy efficient and consumes very little power.

  • The LNK302GN-TL consumes only 50/80 mW in self-powered buck topology at 115/230 VAC input with no load, making it extremely energy-efficient.

Energy Saving in Flyback Topology

  • This chip only needs 7–12 mW to work in flyback design with 115–230 VAC input and no load, which helps save energy.

To summarize, the LNK302GN-TL is a full solution that combines cost-effectiveness, efficiency, and performance. Whether you’re creating power supplies for appliances, LED drivers, or industrial controllers, the LNK302GN-TL can take your projects to the next level by guaranteeing reliable and sustainable power delivery across a wide range of applications.

Functional Description

To understand how the LNK302GN-TL works, let’s delve into its functional description:

1. Oscillator

The oscillator in the LNK302GN-TL operates at an average frequency of 66 kHz, allowing for fine control over power delivery. It employs frequency jittering to reduce electromagnetic interference (EMI) emissions, hence improving overall system performance.

2. Feedback Input Circuit

The FEEDBACK pin’s feedback input circuit ensures consistent voltage management. It detects whether the power MOSFET should be enabled or disabled by sampling the feedback circuit at the start of each cycle, ensuring precise control over the output voltage.

3. Regulator and Shunt Voltage Clamp

The LNK302GN-TL has a 5.8 V regulator that charges the bypass capacitor, removing the requirement for an external bias source. Furthermore, a 6.3 V shunt regulator clamps the BYPASS pin, allowing external power to be supplied through a bias winding.

4. Undervoltage Protection and Over-Temperature Protection

Undervoltage and over-temperature protection are provided by the BYPASS pin undervoltage circuitry. If the voltage falls below a specific threshold or the temperature exceeds a given limit, the power MOSFET is turned off until the conditions return to normal.

5. Current Limit

The current limit circuit measures the current flowing through the power MOSFET. To prevent overloading, the power MOSFET is briefly turned off when the current exceeds the internal threshold.


The LNK302GN-TL is a big step forward in power supply technology. Its integration of critical components, cost-effectiveness, high performance, and energy efficiency distinguish it as an excellent alternative for a wide range of applications. The LNK302GN-TL is a game changer that may simplify your design process and improve the performance and dependability of your products, whether you’re creating appliances, LED drivers, or industrial control systems. Accept this breakthrough semiconductor gadget and open up a new world of power supply design options. Contact ICRFQ, a top electronic component distributor in China, for more information and to get this device at an affordable price.

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Kevin Chen