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Power Integrations LNK6776V
- Part No.:
- LNK6776V
- Manufacturer:
- Power Integrations
- Category:
- AC DC Converters, Offline Switches
- Package:
- 12-SDIP (0.412", 10.46mm), 11 Leads, Exposed Pad
- Description:
- IC OFFLINE SWITCH FLYBACK 12EDIP
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
LNK6776V - Power Integrations LinkSwitch™-HP Off-Line Switcher IC
The LNK6776V is a high-performance, energy-efficient off-line switcher IC from the LinkSwitch™-HP family by Power Integrations. It monolithically integrates a controller and a 725 V power MOSFET into a single eDIP-12 package. Designed for flyback power supplies up to 34W, it offers exceptionally accurate Primary-Side Regulation (PSR), eliminating the need for an optocoupler and secondary-side feedback circuitry.
Design Efficiency: The LNK6776V is optimized for applications requiring high efficiency across the entire load range and ultra-low no-load power consumption (<30 mW at 230 VAC).
Overview & PSR Technology
The LNK6776V simplifies the design of constant voltage (CV) power supplies. By using an innovative primary-side control scheme, it achieves +/-5% CV accuracy without the cost and board space of secondary-side components. It operates in an enhanced peak current mode PWM control scheme with multi-mode operation to maximize efficiency from light load to full power.
This device is particularly robust due to its 725 V rated MOSFET, which provides extra margin for meeting global derating requirements in industrial and consumer electronics. The eDIP-12B package is specifically designed for slim through-hole designs, utilizing the PCB as a heatsink via its exposed pad.
Key Advantages
Achieves >75% efficiency with only 1W input and less than 30mW no-load consumption at 230 VAC.
Eliminates optocouplers and secondary control circuits; integrated frequency jittering reduces EMI filter costs.
Features include line overvoltage (OV) shutdown, accurate hysteretic thermal shutdown (OTP), and output short-circuit protection (SCP).
Integrated high-voltage switch improves reliability and simplifies design for universal input (85-265 VAC) applications.
Feature Highlights
High switching frequency allows for the use of smaller transformers and power supply footprints.
Allows for precise current limiting to optimize transformer design and system safety.
Enables high efficiency and prevents audible noise during light-load operation.
Reduces component stress and prevents output overshoot during power-up.
Package & Mounting
The LNK6776V is available in the eDIP-12B package. This low-profile through-hole package is ideal for slim enclosures and offers excellent thermal performance by transferring heat directly to the PCB through SOURCE pins and an exposed pad.
- PCB Copper Area: Maximize the copper area connected to the SOURCE pins for optimal cooling.
- Extended Creepage: The package design provides extended creepage to the DRAIN pin for improved safety.
- EMI Shielding: The internal heatsink is connected to the SOURCE for low EMI signature.
Technical Specifications
| Manufacturer | Power Integrations |
|---|---|
| Series | LinkSwitch™-HP |
| Output Power (Open Frame, 230V) | 34 W |
| Output Power (Enclosed, Univ.) | 15 W |
| MOSFET Breakdown Voltage | 725 V |
| Switching Frequency | 132 kHz (Typical) |
| Input Voltage Range | 85 VAC - 265 VAC |
| Package | eDIP-12B |
| Operating Temp Range | -40 °C to +150 °C |
Equivalent & Replacement Guide
When selecting a replacement for the LNK6776V, engineers should evaluate both direct pin-compatible upgrades within the LinkSwitch™-HP family and functional alternatives from other manufacturers based on circuit topology.
- LNK6777V: High-power pin-compatible upgrade (up to 48W). Identical eDIP-12B footprint.
- LNK6766V: Lower-power version (up to 28W) for cost-optimized designs.
- ROHM BM2P Series (Functional): As referenced in image_f104b5.jpg, parts like BM2P109TF or BM2P016 offer similar PWM AC/DC conversion logic but will require PCB layout adjustments due to different packaging (SOP/DIP).
- onsemi FSL Series: Functional equivalents for integrated PWM switches in flyback configurations.
Target Applications
The LNK6776V is highly versatile for high-efficiency power supplies in the 10W-34W range:
LCD Monitors & TVs
Provides standby power and auxiliary rails with high efficiency and low no-load power.
Power Adapters
Ideal for cost-sensitive external chargers requiring universal input and high CV accuracy.
Industrial Systems
Delivers robust power management with extensive protection for industrial automation.
Small Appliances
Enables ultra-slim designs for coffee makers and smart home devices.
Technical FAQ
Does the LNK6776V require an optocoupler for voltage regulation?
What is the no-load power consumption of this IC?
Disclaimer
LNK6776V Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Power Integrations
- Series:
- LinkSwitch™-HP
- Package/Case:
- 12-SDIP (0.412", 10.46mm), 11 Leads, Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 725V
- Topology:
- Flyback
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Duty Cycle:
- 64%
- Frequency - Switching:
- 120kHz ~ 136kHz
- Power (Watts):
- 34 W
- Fault Protection:
- Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- eDIP-12
- Mounting Type:
- Through Hole
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