LT8331
Info : RECOMMENDED FOR NEW DESIGNS
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LT8331

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

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $3.54
Features
  • 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
Additional Details
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The LT8331 is a current mode DC/DC converter with a 140V, 0.5A switch operating from a 4.5V to 100V input. With a unique single feedback pin architecture, it is capable of boost, SEPIC, flyback or inverting configurations. Burst Mode operation consumes as low as 6μA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 20mV.

The internally-compensated current mode architecture results in stable operation over a wide range of input and output voltages and programmable switching frequencies between 100kHz to 500kHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skipping modes of operation. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start for controlling inductor current during start-up.

The LT8331 is available in a thermally-enhanced MSOP package with four pins removed for high voltage spacings.

Applications

  • Industrial and Automotive
  • Telecom
  • Medical Diagnostic Equipment
  • Portable Electronics
Part Models 8
1ku List Price Starting From $3.54

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

Apr 18, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Feb 4, 2020

- 20_0129

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LT8331EMSE#PBF

PRODUCTION

LT8331EMSE#TRPBF

PRODUCTION

LT8331EMSE#WPBF

PRODUCTION

LT8331EMSE#WTRPBF

PRODUCTION

LT8331IMSE#PBF

PRODUCTION

LT8331IMSE#TRPBF

PRODUCTION

LT8331IMSE#WPBF

PRODUCTION

LT8331IMSE#WTRPBF

PRODUCTION

Oct 27, 2021

- 21_0154

Moisture Sensitivity Level Rating Change of LT8331, LTC3637, and LTC7000-1 with #W for MSOP Package

LT8331EMSE#WPBF

PRODUCTION

LT8331EMSE#WTRPBF

PRODUCTION

LT8331IMSE#WPBF

PRODUCTION

LT8331IMSE#WTRPBF

PRODUCTION

Jun 21, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

Apr 18, 2022

- 22_0050

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Feb 4, 2020

- 20_0129

arrow down

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LT8331EMSE#PBF

PRODUCTION

LT8331EMSE#TRPBF

PRODUCTION

LT8331EMSE#WPBF

PRODUCTION

LT8331EMSE#WTRPBF

PRODUCTION

LT8331IMSE#PBF

PRODUCTION

LT8331IMSE#TRPBF

PRODUCTION

LT8331IMSE#WPBF

PRODUCTION

LT8331IMSE#WTRPBF

PRODUCTION

Oct 27, 2021

- 21_0154

arrow down

Moisture Sensitivity Level Rating Change of LT8331, LTC3637, and LTC7000-1 with #W for MSOP Package

LT8331EMSE#WPBF

PRODUCTION

LT8331EMSE#WTRPBF

PRODUCTION

LT8331IMSE#WPBF

PRODUCTION

LT8331IMSE#WTRPBF

PRODUCTION

Jun 21, 2022

- 22_0050

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2275A

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

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DC2275A

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

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

Product Detail

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.

Tools & Simulations

Tools & Simulations 2

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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