Datasheet for DC720A:
- Manufacturer Part Number : DC720A
- Manufacturer : AD
- Description : Offline Isolated Flyback LED Controller with Active PFC IC
- Series : LT3799-1
- Reference Price : USD 0
- 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 : ROHS Compliant (Lead Free)
- Package Type : LT3800EFE Demo Board | Vin = 20V to 55V, Vout = 12V @ 6.25A
- Pins : -
- MFG Package Case : -
- Part Type : EVAL
- Standard Packing Type : -
- Standard Packing Quantity : -
- Working Temperature : -
- Other Part Number : DC720A
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The LT3799-1 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 LT3799-1 typically achieves power factors of 0.97. The FAULT pin provides notification of open and short LED conditions. The LT3799-1 offers improved line regulation over the LT3799, but is not designed for use with a TRIAC dimmer.
The LT3799-1 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 Regulator | |
| 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.
