Description
LNK6667 High-Power Off-Line Switcher IC is a highly integrated offline switching regulator from the LinkSwitch™-HP family, designed for building compact, efficient, and reliable AC-DC power supplies. The device integrates a high-voltage power MOSFET and intelligent PWM controller into a single eSIP-7C package, significantly reducing external components, PCB size, and overall system cost.
Featuring an advanced Primary Side Regulation (PSR) architecture, the LNK6667 eliminates the need for an optocoupler and secondary-side feedback circuitry, simplifying power supply design while maintaining excellent output voltage regulation. The device operates in Continuous Conduction Mode (CCM) with an intelligent multi-mode control engine that delivers high efficiency across varying load conditions while minimizing audible noise and standby power consumption.
The LNK6667 incorporates multiple protection mechanisms, including over-voltage protection (OVP), over-current protection (OCP), over-temperature protection (OTP), brown-in/brown-out protection, overload protection with auto-restart, and line surge protection. These features make it an ideal solution for industrial, consumer, automation, IoT, LED driver, smart appliance, and power adapter applications requiring reliable offline power conversion.
Key Features
- Highly integrated offline switcher IC with built-in high-voltage MOSFET
- Primary Side Regulation (PSR) eliminates optocoupler requirement
- Supports Continuous Conduction Mode (CCM) operation
- Advanced multi-mode PWM control engine
- High conversion efficiency across wide load range
- Ultra-low no-load power consumption
- External programmable current limit selection
- Optional remote ON/OFF control
- Optional programmable shutdown delay
- Primary-side output over-voltage protection (OVP)
- Built-in over-current protection (OCP)
- Accurate over-temperature protection (OTP)
- Auto-restart during overload and short-circuit conditions
- Brown-in and brown-out line voltage protection
- Internal line over-voltage sensing
- Cycle-by-cycle current limiting
- Reduced external component count for compact PCB design
- High reliability for industrial power supply applications
Applications
- Offline AC-DC SMPS power supplies
- Industrial power supplies
- Switch mode power supplies (SMPS)
- Battery chargers
- Mobile and consumer electronics chargers
- LED lighting power supplies
- LED driver circuits
- Home appliance power supplies
- Smart home electronics
- IoT devices
- Industrial automation equipment
- Embedded control systems
- Power adapters
- Measurement and test instruments
- Networking equipment
- Security and surveillance systems
- Medical auxiliary power supplies
- Energy-efficient electronic products
- Auxiliary standby power supplies
- General-purpose offline power converters
Package Includes
- 1 × LNK6667 High-Power Off-Line Switcher IC
Specifications
| Parameter | Specification |
|---|---|
| Product Name | LNK6667 |
| Product Type | High-Power Off-Line Switcher IC |
| Series | LinkSwitch™-HP |
| Regulation Type | Primary Side Regulation (PSR) |
| Control Method | Continuous Conduction Mode (CCM) |
| Package | eSIP-7C |
| Integrated Power MOSFET | Yes |
| Protection Features | OVP, OCP, OTP, Brown-in/Brown-out, Auto Restart, Line Overvoltage Protection |
| Current Limit Control | Cycle-by-Cycle |
| Remote ON/OFF | Supported |
| Shipping Weight | 0.01 kg |
| Shipping Dimensions | 5 × 5 × 1 cm |
