Datasheet for LT3799:
- Manufacturer Part Number : LT3799
- Manufacturer : AD
- Description : Offline Isolated Flyback LED Controller with Active PFC
- Series : LT3799
- Reference Price : USD 1.8
- Our Price : We have a better price, contact us by email
- Product Type : Power Control
- Function : Offline Controllers/PFC
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LT3799
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LT3799. If you need any more information about LT3799, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LT3799 is an isolated flyback controller with power factor correction specifically designed for driving LEDs. The controller operates using critical conduction mode allowing the use of a small transformer. Using a novel current sensing scheme, the controller is able to deliver a well regulated current to the secondary side without using an opto-coupler. A strong gate driver is included to drive an external high voltage MOSFET. Utilizing an onboard multiplier, the LT3799 typically achieves power factors of 0.97. The FAULT pin provides notification of open and short LED conditions.
The LT3799 uses a micropower hysteretic start-up to efficiently operate at offline input voltages, with a third winding to provide power to the part. An internal LDO provides a well regulated supply for the part’s internal circuitry and gate driver.
| TRIAC Dimmable | LED Current Regulation | |
| LT3799 | YES | ±10% |
| LT3799-1 | NO | ±5% |
Applications
- Offline 4W to 100W+ LED Applications
- High DC VIN LED Applications
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
