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Concept Technologie (Power Integrations) LNK302DG-TL
- Part No.:
- LNK302DG-TL
- Manufacturer:
- Concept Technologie (Power Integrations)
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Description:
- LNK302DG-TL - Off-Line Switcher IC with Integrated MOSFET (LinkSwitch-TN Family)LNK302DG-TL is a highly integrated off-line switcher IC from Power Integrations (PI), designed for low-power AC-DC conversion. It integrates a high-voltage power MOSFET, contro…
- Quantity:
Unit Price:$0.27
Ext Price:$270.00
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Product Details
LNK302DG-TL - Off-Line Switcher IC with Integrated MOSFET (LinkSwitch-TN Family)
LNK302DG-TL is a highly integrated off-line switcher IC from Power Integrations (PI), designed for low-power AC-DC conversion. It integrates a high-voltage power MOSFET, control circuitry, and protection features into a compact SO-8 package, enabling simple, efficient, and low-cost power supply designs.
This page provides engineering reference and selection guidance. Always verify final parameters using the official manufacturer datasheet before production design.
Overview
LNK302DG-TL belongs to the LinkSwitch-TN family and is optimized for low-power offline power supplies such as standby converters, household appliances, and auxiliary power supplies. It uses a simple primary-side regulation (PSR) approach, eliminating the need for optocouplers and reducing BOM cost.
The device operates directly from rectified AC input and integrates a high-voltage MOSFET, oscillator, and protection features including thermal shutdown, short-circuit protection, and auto-restart. Its high level of integration significantly simplifies power supply design while improving reliability.
Key Advantages
Combines MOSFET and controller, reducing external components and BOM cost.
Primary-side regulation simplifies design and improves long-term reliability.
Designed to meet energy efficiency standards for low no-load consumption.
Includes thermal shutdown, current limiting, and auto-restart protection.
Feature Summary
Eliminates need for external switching transistor.
Supports universal AC input (85VAC–265VAC).
Protects against overload and short-circuit conditions.
Simplifies EMI filtering and design optimization.
Package & Footprint
The LNK302DG-TL is provided in a compact SO-8 (SOP-8) surface-mount package, suitable for space-constrained power supply designs.
- Ensure proper creepage and clearance for high-voltage applications.
- Follow PI layout guidelines to reduce EMI and improve efficiency.
- Use recommended transformer design for optimal performance.
Refer to the official datasheet for exact dimensions and PCB footprint.
Pin Functions
The LNK302DG-TL includes control, supply, and switching pins typical for off-line switcher ICs.
Key Specifications
| Device Type | Off-Line Switcher IC |
|---|---|
| Topology | Flyback / Buck / Buck-Boost |
| Input Voltage | 85VAC – 265VAC (typical) |
| Integrated MOSFET | Yes |
| Control Method | Primary-Side Regulation (PSR) |
| Protection | Thermal, Overload, Short-Circuit |
| Package | SO-8 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to +150°C (junction) |
| Base Product | LNK302 |
Equivalent
Common alternatives or similar devices include:
- BM1R00146F – ROHM, AC/DC controller with similar function
- UCC28713D – Texas Instruments, primary-side regulated flyback controller
- TEA1723BT – NXP, integrated flyback controller with MOSFET
- LNK304DG – Power Integrations, higher power variant in same family
Always verify pin compatibility and electrical differences before substitution.
Manufacturer Information
Power Integrations (PI) is a leading supplier of high-voltage integrated circuits for energy-efficient power conversion.
- Core expertise: AC-DC power conversion, high-voltage ICs
- Markets: Consumer electronics, industrial, appliances
- Resources: Reference designs, application notes, design tools
Applications
Typical applications include:
AC-DC Power Supplies
Low-power offline converters.
Household Appliances
Auxiliary and standby power circuits.
Smart Home Devices
Compact and efficient embedded power supplies.
Industrial Control
Low-power isolated supplies.
Quality & Authenticity
- Strict supplier qualification and incoming inspection
- Full traceability with date/lot codes
- Support for anti-counterfeit verification
FAQ
Is LNK302DG-TL suitable for offline AC-DC designs?
Does it require an optocoupler?
Disclaimer
LNK302DG-TL Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Concept Technologie (Power Integrations)
- Series:
- LinkSwitch®-TN
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR) Cut Tape (CT) Digi-Reel®
- Product 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)
- Grade:
- Qualification:
- Supplier Device Package:
- SO-8C
- Mounting Type:
- Surface Mount
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