LT1371
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LT1371

500kHz High Efficiency 3A Switching Regulator

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LTspice LT1371 - Step-Up (Boost) Regulators Download 1.95 KB
Part Models 20
1ku List Price Starting From $6.33
Features
  • Faster Switching with Increased Efficiency
  • Uses Small Inductors: 4.7µH
  • All Surface Mount Components
  • Low Minimum Supply Voltage: 2.7V
  • Quiescent Current: 4mA Typ
  • Current Limited Power Switch: 3A
  • Regulates Positive or Negative Outputs
  • Shutdown Supply Current: 12µA Typ
  • Easy External Synchronization
Additional Details
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The LT1371 is a monolithic high frequency current mode switching regulator. It can be operated in all standard switching configurations including boost, buck, flyback, forward, inverting and “Cuk”. A 3A high efficiency switch is included on the die, along with all oscillator, control and protection circuitry.

The LT1371 typically consumes only 4mA quiescent current and has higher efficiency than previous parts. High frequency switching allows for very small inductors to be used.

New design techniques increase flexibility and maintain ease of use. Switching is easily synchronized to an external logic level source. A logic low on the Shutdown pin reduces supply current to 12µA. Unique error amplifier circuitry can regulate positive or negative output voltage while maintaining simple frequency compensation techniques. Nonlinear error amplifier transconductance reduces output overshoot on start-up or overload recovery. Oscillator frequency shifting protects external components during overload conditions.

Applications

  • Boost Regulators
  • Laptop Computer Supplies
  • Multiple Output Flyback Supplies
  • Inverting Supplies
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Documentation View All Documentation
LTspice LT1371 - Step-Up (Boost) Regulators Download 1.95 KB
Part Models 20
1ku List Price Starting From $6.33
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LT1371

Documentation

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Data Sheet

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UPDATED 08/27/2007
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LT1371: 500kHz High Efficiency 3A Switching Regulator Data Sheet

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UPDATED 02/21/2008
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LT1371: 500kHz 高効率3A スイッチング・レギュレータ データシート

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Design Note

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UPDATED 03/21/2014
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DN125 - Monolithic DC/DC Converters Break Speed Limits to Shrink Board Space redirect icon

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UPDATED 09/01/1997
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Design Note 164: High Power CCFL Backlight Inverter for Desktop LCD Displays redirect icon

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UPDATED 07/01/1998
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Design Note 183: The LT1370: A 500kHz, 6A Monolithic Boost Converter redirect icon

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UPDATED 07/01/1998
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DN-183: LT1370 ：500kHz、6A モノリシック・ブースト・コンバータ redirect icon

Application Note

2

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UPDATED 08/20/2007
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AN75 - Circuitry for Signal Conditioning and Power Conversion redirect icon

495.00K

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UPDATED 08/20/2007
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AN75：Circuitry for Signal Conditioning and Power Conversion redirect icon

495.00K

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User Guide

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UPDATED 09/24/2009
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DC093A - Demo Manual redirect icon

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Reliability Data

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UPDATED 03/26/2018
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R388 Reliability Data redirect icon

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Documentation

Technical Documents 7
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Data Sheet 1

LT1371: 500kHz High Efficiency 3A Switching Regulator Data Sheet

Reliability Data 1

R388 Reliability Data

User Guide 1

DC093A - Demo Manual

Application Note 1

AN75 - Circuitry for Signal Conditioning and Power Conversion

Design Note 3

DN125 - Monolithic DC/DC Converters Break Speed Limits to Shrink Board Space
Design Note 164: High Power CCFL Backlight Inverter for Desktop LCD Displays
Design Note 183: The LT1370: A 500kHz, 6A Monolithic Boost Converter

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
LT1371CR#PBF 7-Lead DD Pak external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371CR#TRPBF 7-Lead DD Pak external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371CSW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371CSW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371CT7#PBF 7-Lead TO-220 external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVCR#PBF 7-Lead DD Pak external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVCR#TRPBF 7-Lead DD Pak external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVCSW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVCSW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVCT7#PBF 7-Lead TO-220 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVIR#PBF 7-Lead DD Pak external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371HVIR#TRPBF 7-Lead DD Pak external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371HVISW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1371HVISW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371HVIT7#PBF 7-Lead TO-220 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371IR#PBF 7-Lead DD Pak external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371IR#TRPBF 7-Lead DD Pak external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371ISW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371ISW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1371IT7#PBF 7-Lead TO-220 external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1371CR#PBF

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LT1371CR#TRPBF

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LT1371CT7#PBF

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LT1371HVCR#TRPBF

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Aug 10, 2022

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Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1371CSW#PBF

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LT1371CSW#TRPBF

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LT1371HVCSW#PBF

PRODUCTION

LT1371HVCSW#TRPBF

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LT1371HVISW#PBF

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Delta Qualification Matrix

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Aug 10, 2022

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Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1371CR#PBF

PRODUCTION

LT1371CR#TRPBF

PRODUCTION

LT1371CT7#PBF

PRODUCTION

LT1371HVCR#PBF

PRODUCTION

LT1371HVCR#TRPBF

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LT1371HVCT7#PBF

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LT1371HVIR#PBF

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LT1371HVIR#TRPBF

PRODUCTION

LT1371HVIT7#PBF

PRODUCTION

LT1371IR#PBF

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LT1371IR#TRPBF

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LT1371IT7#PBF

PRODUCTION

pdf

PCN22_0175_Form

external-icon

xls

Material_Report

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xlsm

Delta Qualification Matrix

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Aug 10, 2022

- 22_0176

arrow down

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1371CSW#PBF

PRODUCTION

LT1371CSW#TRPBF

PRODUCTION

LT1371HVCSW#PBF

PRODUCTION

LT1371HVCSW#TRPBF

PRODUCTION

LT1371HVISW#PBF

PRODUCTION

LT1371HVISW#TRPBF

PRODUCTION

LT1371ISW#PBF

PRODUCTION

LT1371ISW#TRPBF

PRODUCTION

pdf

PCN22_0176_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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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.

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LT1371 - Step-Up (Boost) Regulators Download

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