LT1577
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LT1577

Ultrafast Transient Response, Low Dropout Regulators Adjustable and Fixed

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LTspice LT1577 - LDO Linear Regulators Download 1.71 KB
Part Models 6
1ku List Price Starting From $5.55
Features
  • UltraFast™ Transient Response Eliminates Tantalum and Electrolytic Output Capacitors
  • FET RDS(ON) Defines Dropout Voltage
  • 1% Reference/Output Voltage Tolerance Over Temperature
  • Typical Load Regulation: 1mV
  • High Side Sense Current Limit
  • Multifunction Shutdown Pin with Latch off
Additional Details
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The LT1575/LT1577 are single/dual controller ICs that drive low cost external N-channel MOSFETs as source followers to produce ultrafast transient response, low dropout voltage regulators.

The LT1575/LT1577 achieve unprecedented transient-load performance by eliminating expensive tantalum or bulk electrolytic output capacitors in the most demanding modern microprocessor applications. Precision-trimmed adjustable and fixed output voltage versions accommodate any required microprocessor power supply voltage. Selection of the N-channel MOSFET RDS(ON) allows very low dropout voltages to be achieved.

Unique protection features include a high side current limit amplifier that activates a fault protection timer circuit. A multifunction Shutdown pin provides either current limit time-out with latch off, over-voltage protection, thermal shutdown or a combination of these functions. The LT1575 is available in 8-pin SO or PDIP and the LT1577 is available in 16-pin narrow body SO.

Applications

  • Pentium® Processor Supplies
  • PowerPC™ Supplies
  • 5V to 3.XXV or 3.3V to 2.XXV Microprocessor Supplies
  • GTL Termination
  • Low Voltage Logic Supplies
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file View Data Sheet
Documentation View All Documentation
LTspice LT1577 - LDO Linear Regulators Download 1.71 KB
Part Models 6
1ku List Price Starting From $5.55
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LT1577

Documentation

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Data Sheet

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UPDATED 10/03/2017
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LT1575/LT1577: Ultrafast Transient Response, Low Dropout Regulators Adjustable and Fixed Data Sheet

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UPDATED 03/16/2011
Japanese

LT1575/LT1577: 超高速過渡応答低ドロップアウト・レギュレータ可変および固定出力電圧 データシート

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Application Note

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UPDATED 08/20/2007
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AN69 - LT1575 UltraFast Linear Controller Makes Fast Transient Response Power Supplies redirect icon

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UPDATED 08/20/2007
English
AN84 - Linear Technology Magazine Circuit Collection, Volume IV redirect icon

2.00M

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Reliability Data

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UPDATED 03/23/2018
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R338 Reliability Data redirect icon

20.17 K

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Design Note

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UPDATED 06/01/1997
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Design Note 157: UltraFast Linear Regulator Eliminates All Bulk Tantalum and Electrolytic Output Capacitors redirect icon

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UPDATED 06/01/1997
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DN-157: タンタルや電解出力コンデンサが不要な超高速リニア・レギュレータ redirect icon

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Documentation

Technical Documents 5
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Data Sheet 1

LT1575/LT1577: Ultrafast Transient Response, Low Dropout Regulators Adjustable and Fixed Data Sheet

Reliability Data 1

R338 Reliability Data

Application Note 2

AN69 - LT1575 UltraFast Linear Controller Makes Fast Transient Response Power Supplies
AN84 - Linear Technology Magazine Circuit Collection, Volume IV

Design Note 1

Design Note 157: UltraFast Linear Regulator Eliminates All Bulk Tantalum and Electrolytic Output Capacitors

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
LT1577CS-3.3/2.8#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1577CS-3.3/2.8#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1577CS-3.3/ADJ#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1577CS-3.3/ADJ#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1577CS-ADJ/ADJ#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1577CS-ADJ/ADJ#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Product Lifecycle

PCN

Oct 8, 2024

- 24_0236

Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

pdf

PCN24_0236_Form

external-icon

xls

Material_Report

Download

pdf

Marking Comparison

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xlsm

Delta Qualification Matrix

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Oct 12, 2022

- 22_0252

Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

LT1577CS-3.3/ADJ#PBF

PRODUCTION

LT1577CS-3.3/ADJ#TRPBF

PRODUCTION

LT1577CS-ADJ/ADJ#PBF

PRODUCTION

LT1577CS-ADJ/ADJ#TRPBF

PRODUCTION

pdf

PCN22_0252_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

Aug 6, 2022

- 22_0173

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

LT1577CS-3.3/ADJ#PBF

PRODUCTION

LT1577CS-3.3/ADJ#TRPBF

PRODUCTION

LT1577CS-ADJ/ADJ#PBF

PRODUCTION

LT1577CS-ADJ/ADJ#TRPBF

PRODUCTION

pdf

PCN22_0173_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

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Part Models

Product Lifecycle

PCN

Oct 8, 2024

- 24_0236

arrow down

Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

pdf

PCN24_0236_Form

external-icon

xls

Material_Report

Download

pdf

Marking Comparison

external-icon

xlsm

Delta Qualification Matrix

Download
Oct 12, 2022

- 22_0252

arrow down

Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

LT1577CS-3.3/ADJ#PBF

PRODUCTION

LT1577CS-3.3/ADJ#TRPBF

PRODUCTION

LT1577CS-ADJ/ADJ#PBF

PRODUCTION

LT1577CS-ADJ/ADJ#TRPBF

PRODUCTION

pdf

PCN22_0252_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon
Aug 6, 2022

- 22_0173

arrow down

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LT1577CS-3.3/2.8#PBF

PRODUCTION

LT1577CS-3.3/2.8#TRPBF

PRODUCTION

LT1577CS-3.3/ADJ#PBF

PRODUCTION

LT1577CS-3.3/ADJ#TRPBF

PRODUCTION

LT1577CS-ADJ/ADJ#PBF

PRODUCTION

LT1577CS-ADJ/ADJ#TRPBF

PRODUCTION

pdf

PCN22_0173_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

Software & Part Ecosystem

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

LT1577 - LDO Linear Regulators Download

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