LT1425 - Isolated Flyback Switching Regulators

Features
  • No Transformer "Third Winding" or Optoisolator Required
  • ±5% Accurate Output Voltage Without User Trims (See Circuit Below)
  • Resistor Programmable Output Voltage
  • Regulation Maintained Well Into Discontinuous Mode (Light Load)
  • Optional Load Compensation
  • Operating Frequency: 285kHz
  • Easily Synchronized to External Clock
  • Available in 16-Pin Narrow SO Package
Typical Application

Applications
  • Isolated Flyback Switching Regulators
  • Ethernet Isolated 5V to -9V Converter
  • Medical Instruments
  • Isolated Telecom Supplies
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1425CS#PBFSO-16C$3.55$2.90
LT1425CS#TRPBFSO-16C$2.96
LT1425IS#PBFSO-16I$4.90$3.95
LT1425IS#TRPBFSO-16I$4.01
Demo Boards
Part NumberDescriptionPrice
DC159A-ALT1425CS | ISOLATED FLYBACK CONVERTER, 5V to 15V INPUT, +/- 5V OUTPUT @ 220 mA$125.00
DC159A-BLT1425CS | ISOLATED FLYBACK CONVERTER, 5V to 15V INPUT, +/- 15V OUTPUT @ 60mA$125.00
Datasheet
Spec Notice
Application Note
Design Note
Reliability Data
Related Product
LT1425 - Isolated Flyback Switching Regulators
LT1425 - SPECIFICATION NOTICE
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
DN158 - Isolated DC/DC Conversion with the LT1425
R387 Reliability Data
LT1425 Footprints and Symbols