Datasheet for LT3781IG#PBF:
- Manufacturer Part Number : LT3781IG#PBF
- Manufacturer : AD
- Description : Bootstrap Start Dual Transistor Synchronous Forward Controller IC
- Series : LT3781
- Reference Price : USD 4.36
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Flyback, Forward and Isolated Controllers
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 20-Lead SSOP
- Pins : 20
- MFG Package Case : 05-08-1640 (G20)
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 66
- Working Temperature : -40 to 125C
- Other Part Number : LT3781IG#PBF
- 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 LT3781 controller simplifies the design of high power synchronous dual transistor forward DC/DC converters. The part employs fixed frequency current mode control and supports both isolated and nonisolated topologies. The IC drives external N-channel power MOSFETs and operates with input voltages up to 72V.
The LT3781 is ideal for output derived power schemes, through the use of a large undervoltage lockout hysteresis range. The part is also equipped with an 18V VCC shunt regulator, which prevents exceeding absolute maximum ratings while in trickle start applications.
The LT3781’s operating frequency is programmable and can be synchronized up to 350kHz. Switch phase is also controlled during synchronized operation to accommodate multiple-converter systems. Internal logic guarantees 50% maximum duty cycle operation to prevent transformer saturation.
The LT3781 is available in a 20-lead SSOP package.
Applications
- Isolated Telecommunication Systems
- Personal Computers and Peripherals
- Distributed Power Step-Down Converters
- Lead Acid Battery Backup Systems
- Automotive and Heavy Equipment
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.
