LT3781 - \'Bootstrap\' Start Dual Transistor Synchronous Forward Controller

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 LT3781s 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.
By Linear Technology Corporation
LT3781 's PackagesLT3781 's pdf datasheet
LT3781EG SSOP
LT3781EG-PBF SSOP
LT3781EG-TR SSOP
LT3781EG-TRPBF SSOP
LT3781IG-PBF SSOP
LT3781IG-TRPBF SSOP




LT3781 Pinout, Pinouts
LT3781 pinout,Pin out
This is one package pinout of LT3781,If you need more pinouts please download LT3781's pdf datasheet.

LT3781 Application circuits
LT3781 circuits
This is one application circuit of LT3781,If you need more circuits,please download LT3781's pdf datasheet.


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