IC PFC CTRLR AVERAGE CURR 16DIP
| Part Number | LT1248IN#PBF |
| Date Code | 2117 |
| Quantity Available | 29603 pcs |
| Manufacturer | Linear Technology/Analog Devices |
| Lead Time | Ship within 24 hours |
| QTY | 2500 |
| Datasheet | LT1248.pdf |
| Minimum Quantity | More than 50pcs |
| Distributor | SingSun |
| RoHS Status | Lead free / RoHS Compliant |
| Shipment Way | EMS/SF/DHL/TNT/UPS/FedEx |
| Country of Assembly | KOREA |
| Country of Diffusion | USA |
| Base Product Number | LT1248 |
| Packaging | Tube |
| Ship From | Hong Kong |
| Lot Number | NZ68960.79 |
| MSL | 3 |
| Mode | Average Current |
| Frequency - Switching | 300kHz |
| Current - Startup | 250μA |
| Voltage - Supply | 15.5 V ~ 27 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP |
The LT1248 provides active power factor correction for universal off-line power systems. By using fixed high frequency PWM current averaging, without the need for slope compensation, the LT1248 achieves far lower line current distortion with a smaller magnetic element than systems that use either peak-current detection or zero current switching approaches in both continuous and discontinuous modes of operation.
The LT1248 uses a multiplier containing a square gain function from the voltage amplifier to reduce the AC gain at light output load and thus maintains low line current distortion and high system stability. The LT1248 also provides filtering capability to reject line switching noise which can cause instability when fed into the multiplier. Line current dead zone is minimized with low bias voltage at the current input to the multiplier.
The LT1248 provides many protection features including peak current limiting and overvoltage protection, and can be operated at frequencies as high as 300kHz.
