LT8361
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LT8361

Low IQ Boost/SEPIC/Inverting Converter with 2A, 100V Switch

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LTspice LT8361 Demo Circuit - Low Iq SEPIC Converter (4.5-48V to 24V @ 450mA) Download 3.28 KB LTspice LT8361 Demo Circuit - Automotive 24V SEPIC Converter (4-48V to 24V @ 450mA) Download 3.4 KB LTspice LT8361 - Step-Up (Boost) Regulators Download 2.29 KB
Part Models 12
1ku List Price Starting From $2.43
Features
  • Wide Input Voltage Range: 2.8V to 60V
  • Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 9μA
  • 2A, 100V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Programmable Frequency (300kHz to 2MHz)
  • Synchronizable to an External Clock
  • Spread Spectrum Frequency Modulation for Low EMI
  • BIAS Pin for Higher Efficiency
  • Programmable Undervoltage Lockout (UVLO)
  • Thermally Enhanced 16-lead MSOP packages
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LT8361 is a current mode DC/DC converter with a 100V, 2A switch operating from a 2.8V to 60V input. With a unique single feedback pin architecture it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9μA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.

An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300kHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skip modes of operation with or without Spread Spectrum Frequency Modulation for low EMI. 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 to control inductor current during startup.

The LT8361 is available in a thermally enhanced 16-lead MSOP package with four pins removed for high voltage pin spacings.

APPLICATIONS

  • Industrial and Automotive
  • Telecom
  • Medical Diagnostic Equipment
  • Portable Electronics
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file View Data Sheet (Rev.A)
Documentation View All Documentation
LTspice LT8361 Demo Circuit - Low Iq SEPIC Converter (4.5-48V to 24V @ 450mA) Download 3.28 KB LTspice LT8361 Demo Circuit - Automotive 24V SEPIC Converter (4-48V to 24V @ 450mA) Download 3.4 KB LTspice LT8361 - Step-Up (Boost) Regulators Download 2.29 KB
Part Models 12
1ku List Price Starting From $2.43
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LT8361

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Data Sheet

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UPDATED 05/02/2018
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LT8361: Low IQ Boost/SEPIC/Inverting Converter with 2A, 100V Switch Data Sheet (Rev.A)

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UPDATED 05/02/2018
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LT8361: 自己消費電流の低い2A/100Vスイッチを備える昇圧／SEPIC ／反転コンバータ データシート (Rev.0)

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User Guide

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DC2599A Demo Board Manual (Rev.0) redirect icon

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Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT8361EMSE#PBF 16(12)-Lead MSOP w/ EP external-link
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LT8361EMSE#TRPBF 16(12)-Lead MSOP w/ EP external-link
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LT8361EMSE#WPBF 16(12)-Lead MSOP w/ EP external-link
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LT8361EMSE#WTRPBF 16(12)-Lead MSOP w/ EP external-link
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LT8361HMSE#PBF 16(12)-Lead MSOP w/ EP external-link
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LT8361HMSE#TRPBF 16(12)-Lead MSOP w/ EP external-link
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  • Reliablity Data external-link
LT8361HMSE#WPBF 16(12)-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8361HMSE#WTRPBF 16(12)-Lead MSOP w/ EP external-link
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  • Reliablity Data external-link
LT8361IMSE#PBF 16(12)-Lead MSOP w/ EP external-link
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LT8361IMSE#TRPBF 16(12)-Lead MSOP w/ EP external-link
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LT8361IMSE#WPBF 16(12)-Lead MSOP w/ EP external-link
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LT8361IMSE#WTRPBF 16(12)-Lead MSOP w/ EP external-link
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Jun 5, 2024

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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LT8361EMSE#WPBF

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LT8361HMSE#TRPBF

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Feb 4, 2020

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

LT8361EMSE#PBF

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LT8361EMSE#TRPBF

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LT8361HMSE#PBF

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LT8361HMSE#TRPBF

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LT8361IMSE#PBF

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LT8361IMSE#TRPBF

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PCN20_0129_Form

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Dec 9, 2019

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LT8361 Data sheet limit changes.

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LT8361EMSE#TRPBF

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LT8361HMSE#PBF

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LT8361HMSE#TRPBF

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LT8361IMSE#PBF

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LT8361IMSE#TRPBF

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Material_Report

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Datasheet Specification Comparison

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Apr 11, 2019

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Notification of Wafer Fab Location Change for 0.35 BCD Process

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LT8361EMSE#TRPBF

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LT8361HMSE#PBF

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LT8361HMSE#TRPBF

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LT8361IMSE#PBF

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LT8361IMSE#TRPBF

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PCN19_0067_Form

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Material_Report

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Delta Qualification Matrix

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Qualification Results Summary

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Detailed Parts List

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Jun 21, 2022

- 22_0050

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

LT8361HMSE#WPBF

LT8361HMSE#WTRPBF

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PCN22_0050_Form

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Jun 5, 2024

- 24_0003

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LT8361EMSE#PBF

PRODUCTION

LT8361EMSE#TRPBF

PRODUCTION

LT8361EMSE#WPBF

LT8361EMSE#WTRPBF

LT8361HMSE#PBF

PRODUCTION

LT8361HMSE#TRPBF

PRODUCTION

LT8361HMSE#WPBF

LT8361HMSE#WTRPBF

LT8361IMSE#PBF

PRODUCTION

LT8361IMSE#TRPBF

PRODUCTION

LT8361IMSE#WPBF

LT8361IMSE#WTRPBF

pdf

PCN24_0003_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Feb 4, 2020

- 20_0129

arrow down

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

LT8361EMSE#PBF

PRODUCTION

LT8361EMSE#TRPBF

PRODUCTION

LT8361HMSE#PBF

PRODUCTION

LT8361HMSE#TRPBF

PRODUCTION

LT8361IMSE#PBF

PRODUCTION

LT8361IMSE#TRPBF

PRODUCTION

pdf

PCN20_0129_Form

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xls

Material_Report

Download
Dec 9, 2019

- 19_0278

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LT8361 Data sheet limit changes.

LT8361EMSE#PBF

PRODUCTION

LT8361EMSE#TRPBF

PRODUCTION

LT8361HMSE#PBF

PRODUCTION

LT8361HMSE#TRPBF

PRODUCTION

LT8361IMSE#PBF

PRODUCTION

LT8361IMSE#TRPBF

PRODUCTION

pdf

PCN19_0278_Form

external-icon

xls

Material_Report

Download

pdf

Datasheet Specification Comparison

external-icon
Apr 11, 2019

- 19_0067

arrow down

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8361EMSE#PBF

PRODUCTION

LT8361EMSE#TRPBF

PRODUCTION

LT8361HMSE#PBF

PRODUCTION

LT8361HMSE#TRPBF

PRODUCTION

LT8361IMSE#PBF

PRODUCTION

LT8361IMSE#TRPBF

PRODUCTION

pdf

PCN19_0067_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

pdf

Qualification Results Summary

external-icon
Detailed Parts List

pdf

Other

external-icon
Jun 21, 2022

- 22_0050

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

LT8361HMSE#WPBF

LT8361HMSE#WTRPBF

pdf

PCN22_0050_Form

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xls

Material_Report

Download

pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Software & Part Ecosystem

Evaluation Kits 1

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DC2599A

LT8361 Demo Board | SEPIC, VIN = 4.5V to 48, VOUT= 24V @ up to 600mA

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DC2599A

LT8361 Demo Board | SEPIC, VIN = 4.5V to 48, VOUT= 24V @ up to 600mA

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DC2599A
LT8361 Demo Board | SEPIC, VIN = 4.5V to 48, VOUT= 24V @ up to 600mA
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Product Detail

Demonstration circuit 2599A features the LT8361 in a SEPIC configuration. It operates with a switching frequency of 400kHz and is designed to convert a 4.5V to 48V source to 24V, with up to 600mA output current (depending on input voltage).

The LT8361 can operate with inputs as high as 60V. However, in this demo circuit, the input is limited by the voltage rating of the input capacitors.

The demo board contains a selectable jumper, JP1, to aid in the selection of the desired Sync pin mode of operation. The default setting is Burst Mode® operation.

This layout is optimized for good EMI performance and small solution size. Input and output filters and an optimized power switching loop, comprised of C20 and C21 are necessary to pass CISPR 25 Class 5 emissions, and are added by default. These components can be excluded in applications not requiring noise immunity.

The data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual.

Resources

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DC2599A Demo Board Manual (Rev.0) Download

400.85 K

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DC2599A Schematic Download

102.34 K

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DC2599A Design Files Download

1.32 M

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Evaluation Kits1

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DC2599A

LT8361 Demo Board | SEPIC, VIN = 4.5V to 48, VOUT= 24V @ up to 600mA

Tools & Simulations 1

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.

spice tool Lt Spice

LT8361 Demo Circuit - Low Iq SEPIC Converter (4.5-48V to 24V @ 450mA) Download

3.28 K

spice tool Lt Spice

LT8361 Demo Circuit - Automotive 24V SEPIC Converter (4-48V to 24V @ 450mA) Download

3.4 K

spice tool Lt Spice

LT8361 - Step-Up (Boost) Regulators Download

2.29 K

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