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LT3573

Features: ·3V to 40V Input Voltage Range·1.25A, 60V Integrated NPN Power Switch·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...

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SeekIC No. : 004401124 Detail

LT3573: Features: ·3V to 40V Input Voltage Range·1.25A, 60V Integrated NPN Power Switch·Boundary Mode Operation·No Transformer Third Winding or Optoisolator Required for Regulation·Improved Primary-Side Win...

LT3573 Data Sheet

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Part Number:
LT3573
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/30

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Product Details

Description



Features:

·3V to 40V Input Voltage Range
·1.25A, 60V Integrated NPN Power Switch
·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
·Thermally Enhanced 16-Lead MSOP


Application

·Industrial, Automotive, Medical
·Low Power PoE


Pinout

Connection Diagram


Specifications

SW ............................................................................60V
VIN, SHDN/UVLO, RFB , BIAS  .....................................40V 
SS, VC, TC , REF , RILIM  ...............................................5V
Maximum Junction Temperature..............................125
Operating Junction Temperature Range (Note 2)
 LT3573E ..................................................-40 to 125
Storage Temperature Range ....................-65 to 150


Description

The LT® 3573 is a monolithic switching regulator specifically designed for the isolated ? yback topology. No third winding or optoisolator is required for regulation. The part senses the isolated output voltage directly from the primary side ? yback waveform. A 1.25A, 60V NPN power switch is integrated along with all control logic into a 16-lead MSOP package.

The LT3573 operates with input supply voltages from 3V 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.




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