LT8331

RECOMMENDED FOR NEW DESIGNS

Low IQ Boost/SEPIC/Flyback/Inverting Converter with 0.5A, 140V Switch

Data Sheet (Rev. C) Product Selection Table
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Part Details

  • Wide Input Voltage Range: 4.5V to 100V
  • Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 6µA
  • 0.5A, 140V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Programmable Frequency (100kHz to 500kHz)
  • Synchronizable to an External Clock
  • BIAS Pin for Higher Efficiency
  • Programmable Undervoltage Lockout (UVLO)
  • Thermally-Enhanced High Voltage MSOP Package
  • AEC-Q100 Qualified for Automotive Applications
LT8331
Low IQ Boost/SEPIC/Flyback/Inverting Converter with 0.5A, 140V Switch
LT8331 Application Circuit LT8331 Pin Configuration LT8331 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
LT8330
RECOMMENDED FOR NEW DESIGNS Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch
LT8335
PRODUCTION Low IQ Boost/SEPIC/ Inverting Converter with 2A, 28V Switch
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8331

LTpowerCAD 1

Design tools for the following parts are available in LTpowerCAD:

  • LT8331
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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2275A

LT8331 Demo Board | Boost, 10V ≤ VIN ≤ 48V, 120VOUT @ up to 80mA

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Product Details

Demonstration circuit DC2275A features the LT8331 in a boost configuration. The demo circuit demonstrates small size and low component count. The boost is designed to convert a 10V to 48V source to 120V at 25mA to 80mA.
DC2275A
LT8331 Demo Board | Boost, 10V ≤ VIN ≤ 48V, 120VOUT @ up to 80mA
DC2275A Demo Board DC2275A Demo Board DC2275A Demo Board DC2275A Demo Board DC2275A - Schematic

Latest Discussions

44 Weeks Ago
How to set negative voltage?
45 Weeks Ago
How to set negative voltage
46 Weeks Ago
How does LT8331 work for inverting
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