LNK3694P
Energy Efficient, Low Power Off-Line Switcher IC With Integrated System Level Protection
Applications
Product Details
LinkSwitch-XT2 incorporates a 725 V / 900 V power MOSFET, oscillator, simple ON/OFF control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the DRAIN pin, eliminating the need for a bias winding and associated circuitry.
Product Highlights
Easy to Design
- Lowest component count switcher solution
- Selectable device current limit
- Fully integrated auto-restart for short-circuit and open-loop protection
- Optional self-biased supply
- Frequency jittering greatly reduces EMI
- Meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package
- Pin-out simplifies PCB heat sinking
Features Superior to Linear/RCC
- Output overvoltage protection (OVP)
- Input overvoltage line protection (OVL)
- Hysteretic over-temperature protection (OTP)
- Extended creepage between DRAIN pin and all other pins improves field reliability
- 725 V MOSFET rating for excellent surge withstand
- 900 V MOSFET rating series for industrial design or extra safety margin
- Extremely low component count enhances reliability
- Allows single-sided PCB and full SMD manufacturability
EcoSmart– Extremely Energy Efficient
- Easily meets all global energy efficiency regulations
- No-load consumption <100 mW without bias winding at 265 VAC input (<10 mW with bias winding)
- ON/OFF control provides constant efficiency to very light loads –ideal for mandatory CEC regulations
Specifications
| Output Power (Max) - Open Frame, 230V | 6.00 W |
| Output Power (Max) - Enclosed, 230V | 6.00 W |
| Output Power (Max) - Enclosed, Univ | 4.00 W |
| Output Power (Max) - Open Frame, Univ | 4.00 W |
| Breakdown Voltage | 900 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 484 V |
| Auto-Restart & Overvoltage Response | Latch Off |
| IC Package | PDIP-8C |
| Internal Switch | Yes |
| Mounting Type | Through Hole |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Secondary-side |
| Control Features |
Selectable Current Limit
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Overtemperature
Input Overvoltage
Output Overvoltage
Output Short Circuit
Output Open Loop
Output Overload
|
| Output Profile | CV |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| Secondary Response | Auto-restart |
