LT3512

PRODUCTION

Monolithic High Voltage Isolated Flyback Converter

Data Sheet Product Selection Table
Part Models
8
1ku List Price
Starting From $3.78
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Part Details

  • 4.5V to 100V Input Voltage Range
  • Internal 420mA, 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
  • BIAS Pin for Internal Bias Supply and Power Switch Driver
  • No External Start-Up Resistor
  • 16-Lead MSOP Package
LT3512
Monolithic High Voltage Isolated Flyback Converter
48V to 5V Isolated Flyback Converter Output Load and Line Regulation Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Isolated µModule Converters 2
LTM8048
RECOMMENDED FOR NEW DESIGNS 3.1VIN to 32VIN Isolated μModule (Power Module) DC/DC Converter with LDO Post Regulator
LTM8047
RECOMMENDED FOR NEW DESIGNS 3.1VIN to 32VIN Isolated μModule (Power Module) DC/DC Converter
PowerPath, Ideal Diodes, and Load Switches 1
LTC4359
RECOMMENDED FOR NEW DESIGNS Ideal Diode Controller with Reverse Input Protection
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT3512
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
DC1803A

LT3512EMS Demo Board | 36V to 75VIN, VOUT = 5V @ 500mA

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Product Details

Demonstration circuit 1803A is a monolithic high voltage isolated flyback converter featuring the LT3512. The demo circuit is designed for a 5V isolated output from an input voltage range of 36V to 75V. The maximum output current is 500mA. VIN can be lower if output current is less than 500mA. The circuit doesn’t require an opto-isolator due to the output voltage being sensed directly from the primary side transformer winding. A third winding is used to bias the LT3512 for highest efficiency.
DC1803A
LT3512EMS Demo Board | 36V to 75VIN, VOUT = 5V @ 500mA
DC1803A - Schematic

Latest Discussions

5 Years Ago
RE: LT3512 Shutting down at 150C
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