LT3511EMS#PBF

LT3511 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. Two external resistors and the transformer turns ratio easily set the output voltage. Off-the-shelf transformers are available for several applications. The high level of integration and the use of boundary mode operation results in a simple, clean, tightly regulated application solution to the traditionally tough problem of isolated power delivery. It is widely used in application such as isolated telecom power supplies, isolated auxiliary/housekeeping power supplies, isolated industrial, automotive and medical power supplies etc.

• Input voltage range is 4.5V to 100V
• Internal 240mA, 150V power switch
• Boundary mode operation
• No transformer third winding or opto-isolator required for regulation
• Improved primary-side winding feedback load regulation
• VOUT set with two external resistors, no external start-up resistor
• BIAS pin for internal bias supply and power switch driver
• Switch VCESAT is 0.3V typical
• Operating temperature is -40°C to 125°C
• Package style is 16-lead plastic MSOP

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