LT1776
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LT1776

Wide Input Range, High Efficiency, Step-Down Switching Regulator

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LTspice LT1776 - Step-Down (Buck) Regulators Download 2 KB
Part Models 6
1ku List Price Starting From $3.54
Features
  • Wide Input Range: 7.4V to 40V
  • Tolerates Input Transients to 60V
  • 700mA Peak Switch Rating
  • Adaptive Switch Drive Maintains Efficiency at High Load Without Pulse Skipping at Light Load
  • True Current Mode Control
  • 200kHz Fixed Operating Frequency
  • Synchronizable to 400kHz
  • Low Supply Current in Shutdown: 30µA
  • Available in 8-Pin SO and PDIP Packages
Additional Details
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The LT1776 is a wide input range, high efficiency Buck (step-down) switching regulator. The monolithic die includes all oscillator, control and protection circuitry. The part can accept input voltages as high as 60V and contains an output switch rated at 700mA peak current. Current mode control delivers excellent dynamic input supply rejection and short-circuit protection.

The LT1776 contains several features to enhance efficiency. The internal control circuitry is normally powered via the VCC pin, thereby minimizing power drawn directly from the VIN supply. The action of the LT1776 switch circuitry is also load dependent. At medium to high loads, the output switch circuitry maintains fast rise time for good efficiency. At light loads, rise time is deliberately reduced to avoid pulse skipping behavior.

The available SO-8 package and 200kHz switching frequency allow for minimal PC board area requirements.

Applications

  • Automotive DC/DC Converters
  • Cellular Phone Battery Charger Accessories
  • IEEE 1394 Step-Down Converters
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Documentation View All Documentation
LTspice LT1776 - Step-Down (Buck) Regulators Download 2 KB
Part Models 6
1ku List Price Starting From $3.54
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LT1776

Documentation

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Data Sheet

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UPDATED 08/23/2007
English

LT1776: Wide Input Range, High Efficiency, Step-Down Switching Regulator Data Sheet

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229.00K
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UPDATED 05/31/2005
Japanese

LT1776: 広入力範囲、高効率、降圧スイッチング・レギュレータ データシート

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149.00K
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Design Note

6

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PDF

UPDATED 03/21/2014
English
DN202 - 60V, High Efficiency Buck Switching Regulators in SO-8 redirect icon

101.00K

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UPDATED 05/30/2005
Japanese
DN202 SO-8パッケージの60V高効率降圧スイッチング・レギュレータ redirect icon

68.00K

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PDF Vector

PDF

UPDATED 06/28/2016
English
DN191 - The LT1776 Provides Power for the IEEE1394 Fire Wire redirect icon

591.00K

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UPDATED 05/31/2005
Japanese
DN191 IEEE1394「Fire Wire」に電源を供給するLT1776 redirect icon

66.00K

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UPDATED 04/01/1999
English
Design Note 202: 60V, High Efficiency Buck Switching Regulators in SO-8 redirect icon

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UPDATED 11/09/2022
English
Design Note 191: The LT1776 Provides Power for the IEEE1394 Fire Wire redirect icon

User Guide

1

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UPDATED 09/24/2009
English
DC204A - Demo Manual redirect icon

335.00K

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Reliability Data

1

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UPDATED 03/23/2018
English
R012 Reliability Data redirect icon

31.55 K

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Documentation

Technical Documents 7
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Data Sheet 1

LT1776: Wide Input Range, High Efficiency, Step-Down Switching Regulator Data Sheet

Reliability Data 1

R012 Reliability Data

User Guide 1

DC204A - Demo Manual

Design Note 4

DN202 - 60V, High Efficiency Buck Switching Regulators in SO-8
DN191 - The LT1776 Provides Power for the IEEE1394 Fire Wire
Design Note 202: 60V, High Efficiency Buck Switching Regulators in SO-8
Design Note 191: The LT1776 Provides Power for the IEEE1394 Fire Wire

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
LT1776CN8#PBF 8-Lead PDIP (Narrow 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
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  • Reliablity Data external-link
LT1776CS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1776CS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1776IN8#PBF 8-Lead PDIP (Narrow 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1776IS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1776IS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Product Lifecycle

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Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

LT1776CN8#PBF

PRODUCTION

LT1776IN8#PBF

PRODUCTION

pdf

PCN22_0241_Form

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xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1776CN8#PBF

PRODUCTION

LT1776IN8#PBF

PRODUCTION

pdf

PCN22_0172_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

Oct 12, 2022

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LT1776CS8#PBF

PRODUCTION

LT1776CS8#TRPBF

PRODUCTION

LT1776IS8#PBF

PRODUCTION

LT1776IS8#TRPBF

PRODUCTION

pdf

PCN22_0255_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

Download

Jun 11, 2021

- 21_0060

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1776CS8#PBF

PRODUCTION

LT1776CS8#TRPBF

PRODUCTION

LT1776IS8#PBF

PRODUCTION

LT1776IS8#TRPBF

PRODUCTION

pdf

PCN21_0060_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

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PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

LT1776CN8#PBF

PRODUCTION

LT1776IN8#PBF

PRODUCTION

pdf

PCN22_0241_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon
Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1776CN8#PBF

PRODUCTION

LT1776IN8#PBF

PRODUCTION

pdf

PCN22_0172_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download
Oct 12, 2022

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LT1776CS8#PBF

PRODUCTION

LT1776CS8#TRPBF

PRODUCTION

LT1776IS8#PBF

PRODUCTION

LT1776IS8#TRPBF

PRODUCTION

pdf

PCN22_0255_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Jun 11, 2021

- 21_0060

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1776CS8#PBF

PRODUCTION

LT1776CS8#TRPBF

PRODUCTION

LT1776IS8#PBF

PRODUCTION

LT1776IS8#TRPBF

PRODUCTION

pdf

PCN21_0060_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

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Evaluation Kits 1

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DC204A-B

LT1776CS8 | High Voltage, High Efficiency, Step-Down Switching Regulator, 7V to 60VIN, 3.3V and 5V @ 0.5A Out (Thru-hole Input Cap)

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DC204A-B

LT1776CS8 | High Voltage, High Efficiency, Step-Down Switching Regulator, 7V to 60VIN, 3.3V and 5V @ 0.5A Out (Thru-hole Input Cap)

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DC204A-B
LT1776CS8 | High Voltage, High Efficiency, Step-Down Switching Regulator, 7V to 60VIN, 3.3V and 5V @ 0.5A Out (Thru-hole Input Cap)
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Product Detail

DC204A-B: Demo Board for the LT1776 Wide Input Range, High Efficiency, Step-Down Switching Regulator.

Resources

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DC204A - Schematic Download

60.00K

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ZIP

DC204A - Design File Download

236.00K

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DC204A - Demo Manual Download

335.00K

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Evaluation Kits1

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DC204A-B

LT1776CS8 | High Voltage, High Efficiency, Step-Down Switching Regulator, 7V to 60VIN, 3.3V and 5V @ 0.5A Out (Thru-hole Input Cap)

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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LT1776 - Step-Down (Buck) Regulators Download

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