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LT3573EMSE#PBF - 

DC-DC Switching Flyback Regulator, Adjustable, 3V-40V in, 1.25A out, 1MHz, MSOP-16

LINEAR TECHNOLOGY LT3573EMSE#PBF

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Manufacturer Part No:
LT3573EMSE#PBF
Order Code:
2102641
Technical Datasheet:
(EN)
See all Technical Docs

Product Information

:
40V
:
1.25A
:
1Outputs
:
125°C
:
16Pins
:
-
:
1.23V
:
3V
:
-
:
Flyback
:
-
:
MSOP
:
1MHz
:
Cut Tape
:
MSL 1 - Unlimited
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Product Overview

The LT3573EMSE#PBF is an Isolated Flyback Converter without an opto-coupler specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. The LT3573 operates with input supply voltages from 3 to 40V and can deliver output power up to 7W with no external power devices. The LT3573 utilizes boundary mode operation to provide a small magnetic solution with improved load regulation. It derives its information about the isolated output voltage by examining the primary-side flyback pulse waveform. Due to the sampling nature of the feedback loop, there are several timing signals and other constraints that are required for proper LT3573 operation.
  • 1.25A, 60V Integrated NPN 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
  • BIAS pin for internal bias supply and power NPN driver
  • Programmable soft-start
  • Programmable power switch current limit

Applications

Industrial, Automotive, Medical

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