LNK6777K
Energy Efficient, High-Power Off-Line Switcher with Accurate Primary-Side Regulation (PSR)
Applications
Product Details
The LinkSwitch-HP family of flyback power supply ICs incorporate a primary side regulated (PSR) controller and high-voltage power MOSFET in a single package. The IC family includes devices optimized for constant voltage (CV) operation at power ranges from 9W to 90 W. LinkSwitch-HP IC controller features +/-5% CV accuracy, selectable current limit, programmable latching or hysteretic OVP, UVP and OTP, improved overload power compensation over line, fast AC reset, and programmable shutdown delay time.
Product Highlights
EcoSmart - Energy Efficient
- Multi-mode control maximizes efficiency over full load range
- No-load consumption below 30 mW at 230 VAC
- >75% efficiency with 1 W input at 230 VAC
- >50% efficiency with 0.1 W input at 230 VAC
High Design Flexibility for Low System Cost
- Dramatically simplifies power supply designs
- 132 kHz operation reduces transformer and power supply size
- Accurate programmable current limit
- Frequency jittering reduces EMI filter cost
- Fully integrated soft-start for minimum start-up stress
- 725 V MOSFET simplifies meeting derating requirements (LNK677x)
- 650 V MOSFET for lowest system cost (LNK676x/LNK666x)
- Fast transient response family option (LNK666x)
Extensive Protection Features
- Output short-circuit protection (SCP)
- Ouput overload/over-current protection (OPP, OCP)
- Optional extended shutdown delay time
- Output overvoltage protection (OVP), hysteretic or latching
- Line brown-in/out protection (line UV)
- Line overvoltage (OV) shutdown extends line surge withstand
- Accurate thermal shutdown (OTP), hysteretic or latching
Advanced Green Package Options
- eSIP-7C package:
- Vertical orientation for minimum PCB footprint
- Simple heat sink mounting using clip or adhesive pad
- eSOP-12B package:
- Low profile surface mounted for ultra-slim designs
- Heat transfer to PCB via exposed pad and SOURCE pins
- Supports either wave or IR reflow soldering
- eDIP-12B package:
- Low profile through-hole mounted for ultra-slim designs
- Heat transfer to PCB via exposed pad or optional metal heat sink
- Extended creepage to DRAIN pin
- Heat sink is connected to SOURCE for low EMI
- Halogen free and RoHS compliant
Applications
- LCD Monitor and TV
- Adapter
- Appliances
- Industrial
Specifications
| Output Power (Max) - Open Frame, 230V | 59.00 W |
| Output Power (Max) - Enclosed, 230V | 25.00 W |
| Output Power (Max) - Enclosed, Univ | 19.00 W |
| Output Power (Max) - Open Frame, Univ | 43.00 W |
| Switching Frequency (min) | 120.00 kHz |
| Switching Frequency (max) | 136 kHz |
| Breakdown Voltage | 725 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response |
Auto-restart
Latch Off
|
| IC Package | eSOP-12B |
| Internal Switch | Yes |
| Mounting Type | Surface Mount |
| Over-Temperature Response |
Hysteretic
Latch Off
|
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Primary-side |
| Control Features |
Selectable Current Limit
Frequency Jittering
Soft Start
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Overtemperature
Output Overvoltage
Output Short Circuit
Output Open Loop
Output Overload
Line-compensated Overload
|
| Topology | Flyback |
| Product Sub-Type | PMIC |
| Secondary Response | Auto-restart |
