LNK3771D-H003
High-Efficiency Off-line CV Flyback Switcher IC with Integrated 725 V / 900 V Primary MOSFET, Low No-Load, and Synchronous Rectification
Product Details
The LinkSwitch-XT2SR family dramatically increases the efficiency of auxiliary power supplies used in appliances, consumer products and industrial applications. Ideal for non-isolated designs with a high current, 5 V output, this advanced flyback controller can achieve >90% full load efficiency. High efficiency is maintained over to load range, with >85% efficiency at 100 mW load. No-load consumption is <5 mW.
The default 5 V main output can be adjusted via optional external feedback resistors. Power for start-up and normal operation is supplied from the DRAIN and VOUT pins, eliminating the need for a bias winding and associated
circuitry. The SO-16 package and a low number of external components make the LinkSwitch-XT2SR ICs ideal for compact designs.
Specifications
| Output Power (Max) - Open Frame, 230V | 7.00 W |
| Output Power (Max) - Open Frame, Univ | 6.00 W |
| Switching Frequency (max) | 66 kHz |
| Switching Frequency (Avg. 230 VAC) | 66 kHz |
| Breakdown Voltage | 725 V |
| Voltage - Output (Min) | 5.00 V |
| Voltage - Output (Max) | 5.00 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| Auto-Restart Threshold | OL |
| IC Package | SO-16B |
| Internal Switch | Yes |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Features |
Synchronous Rectification
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Open SR FET Detection
Output Overvoltage
Overtemperature
|
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
