LT3575EFE#TRPBF

LT®3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or optoisolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. It operates with input supply voltages from 3V to 40V, and can deliver output power up to 14W with no external power switch. This utilizes boundary mode operation to provide a small magnetic solution with improved load regulation. The output voltage is easily set with two external resistors and the transformer turns ratio. Application includes industrial, automotive and medical isolated, power supplies.

• Boundary mode operation
• No transformer third winding or optoisolator required for regulation
• Improved primary-side winding feedback load regulation
• VOUT set with two external resistors
• BIAS pin for internal bias supply and power NPN driver
• Programmable soft-start, programmable power switch current limit
• Input voltage range from 3 to 40V (TA = 25°C, VIN = 12V)
• 16-lead plastic TSSOP package
• Temperature rating range from -40°C to 125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party