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LNK305GN-TL

Name: LNK305GN-TL
Rating: 4.7 (12 reviews)

IC OFFLINE SWITCH MULT TOP 8SMD

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仕様

Series	LinkSwitch®-TN
Part Status	Active
Base Product Number	LNK305
Output Isolation	Non-Isolated
Internal Switch(s)	Yes
Voltage - Breakdown	700V
Topology	Buck, Buck-Boost, Flyback
Duty Cycle	69%
Frequency - Switching	66kHz
Fault Protection	Current Limiting, Open Loop, Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 150°C (TJ)
Package	8-SMD (7 Leads), Gull Wing
Supplier Device Package	SMD-8B
Mounting Type	Surface Mount
Packaging	Cut Tape (CT), Tape & Reel (TR)

概要

Description

The LNK305GN-TL is a power management integrated circuit (IC) designed for offline switching power supplies. It features a high-voltage startup capability, allowing it to operate directly from the AC mains without an external start-up resistor. The LNK305GN-TL is part of the LinkSwitch family, which enables efficient AC-DC power conversion.
Key features include low standby power consumption, built-in overvoltage protection, and thermal shutdown capabilities, making it suitable for various applications such as adapters, LED drivers, and small appliances. It operates in a quasi-resonant mode, which enhances efficiency and minimizes electromagnetic interference (EMI). The device supports a wide input voltage range and offers various output power levels, typically up to 5W.
Overall, the LNK305GN-TL is ideal for compact and cost-effective power supply designs, incorporating safety features and energy efficiency in compliance with global regulations.

Features

The LNK305GN-TL is a high-performance integrated circuit designed for offline switch mode power supplies (SMPS). It features:
1. Power Ratings: Supports up to 5W output power in a compact package.
2. Built-in Switching: Incorporates a high-voltage power MOSFET, reducing external component count.
3. Wide Input Voltage Range: Operates within a range of 85V to 265V AC, suitable for global applications.
4. Low Standby Power: Offers low standby consumption, aligning with energy efficiency standards.
5. Integrated Feedback: Uses a primary-side regulation (PSR) scheme, eliminating the need for an opto-isolator.
6. Built-in Protection Features: Includes thermal shutdown, overload protection, and a frequency jittering mechanism to reduce EMI.
7. Compact Package: Available in a 6-pin SIP package, facilitating easy integration into designs.
These features make the LNK305GN-TL an ideal choice for applications such as adapters, chargers, and LED drivers, where efficiency and reliability are critical.

Package

The LNK305GN-TL is packaged in a TO-220 style case. This package type is designed for efficient heat dissipation and easy mounting on a heatsink, making it suitable for power applications.

Pinout

The LNK305GN-TL is a low-power switcher IC from the LinkSwitch family manufactured by Power Integrations. It features a total of 8 pins. The pin functions are as follows:
1. DRAIN - Connects to the switching transistor and is used for energy transfer.
2. SOURCE - Connects to the ground; it serves as a reference for the drain voltage.
3. GND - Ground pin for circuit reference.
4. VDD - Supplies voltage to the chip.
5. COMP - Compensation pin for feedback loop stability.
6. SENSE - Detects current for overcurrent protection.
7. FB - Feedback pin for controlling output regulation.
8. CS - Current sense pin for overcurrent protection and control.
The LNK305GN-TL is typically used in isolated and non-isolated power supply applications, offering features like low standby power and high efficiency.

Manufacturer

The LNK305GN-TL is manufactured by Power Integrations, Inc., a company specializing in high-performance analog and mixed-signal integrated circuits. Power Integrations focuses on developing innovative technologies for power conversion, including power supply solutions for various applications such as consumer electronics, lighting, and industrial systems. Their products are designed to improve energy efficiency, reduce size, and enhance reliability in power management solutions. The company is well-known for its contributions to energy-efficient power supply designs and has a strong presence in the semiconductor industry.

Application

The LNK305GN-TL is primarily used in power supply applications, specifically in off-line low power switch-mode power supplies (SMPS). It is suitable for powering consumer electronics, appliances, LED lighting, and industrial control systems. Its features support efficient energy conversion while maintaining compact designs, making it ideal for applications requiring low standby power and minimal heat generation.

Equivalent

The LNK305GN-TL is a part of the LinkSwitch series from Power Integrations, primarily used for power supply applications. Equivalent products include the LNK302, LNK304, LNK306, and LNK307, which are similar in functionality but may differ in output power and specifications. Always check the datasheets for specific differences in voltage ratings, current ratings, and other parameters before substituting.