LT1120
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LT1120

Micropower Regulator with Comparator and Shutdown

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Part Models 6
1ku List Price Starting From $3.15
Features
  • 40µA Supply Current
  • 125mA Output Current
  • 2.5V Reference Voltage
  • Reference Output Sources 2mA and Sinks 2mA
  • Open Collector
  • Comparator Sinks 10mA
  • Logic Shutdown
  • 0.2V Dropout Voltage
  • Thermal Limiting
  • Available in 8-Lead DIP and SO Packages
Additional Details
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The LT1120 is a combination micropower positive regulator and free collector comparator on a single monolithic chip. With only 40µA supply current, the LT1120 can supply over 125mA of output current. Input voltage range is from 4.5V to 36V and dropout voltage is 0.6V at 125mA. Dropout voltage decreases with lower load currents. Also included on the chip is a class B output 2.5V reference that can either source or sink current. A shutdown pin allows logic shutdown of the output.

The comparator can be used for system or battery monitoring. For example, the comparator can be used to warn of low system voltage. Frequency compensation of the comparator for amplifier applications can be obtained by adding external output capacitance.

The 2.5V reference will source or sink current. This allows it to be used as a supply splitter or auxiliary output.

No Load Quiescent Current
LT1120 80uA
LT1120A 30uA

Applications

  • Battery Systems
  • Battery-Backup System
  • Portable Terminals
  • Portable Instruments
  • Memory Keep-Alive
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Documentation View All Documentation
Part Models 6
1ku List Price Starting From $3.15
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LT1120

Documentation

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Data Sheet

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UPDATED 09/05/2007
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LT1120: Micropower Regulator with Comparator and Shutdown Data Sheet

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134.00K
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Reliability Data

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UPDATED 03/22/2018
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R086 Reliability Data redirect icon

21.12 K

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Application Note

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UPDATED 09/08/2010
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AN32 - High Efficiency Linear Regulators redirect icon

798.00K

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UPDATED 08/20/2007
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AN58 - 5V to 3.3V Converters for Microprocessor Systems redirect icon

302.00K

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UPDATED 09/28/2020
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AN-42: Voltage Reference Circuit Collection redirect icon

Design Note

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UPDATED 11/09/2022
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Design Note 63: 2 AA Cells Replace 9V Battery, Extend Operating Life 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
LT1120CN8#PBF 8-Lead PDIP (Narrow 0.3 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT1120CS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1120CS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1120IN8#PBF 8-Lead PDIP (Narrow 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1120IS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT1120IS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Part Models

Product Lifecycle

PCN

Dec 18, 2023

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

LT1120CN8#PBF

PRODUCTION

LT1120IN8#PBF

PRODUCTION

pdf

PCN22_0241_Form

external-icon

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]

LT1120CN8#PBF

PRODUCTION

LT1120IN8#PBF

PRODUCTION

pdf

PCN22_0172_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

Oct 12, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1120CS8#PBF

PRODUCTION

LT1120CS8#TRPBF

PRODUCTION

LT1120IS8#PBF

PRODUCTION

LT1120IS8#TRPBF

PRODUCTION

pdf

PCN22_0254_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download

Jun 11, 2021

- 21_0060

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

LT1120CS8#PBF

PRODUCTION

LT1120CS8#TRPBF

PRODUCTION

LT1120IS8#PBF

PRODUCTION

LT1120IS8#TRPBF

PRODUCTION

pdf

PCN21_0060_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

Filter by Model

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Part Models

Product Lifecycle

PCN

Dec 18, 2023

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

LT1120CN8#PBF

PRODUCTION

LT1120IN8#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]

LT1120CN8#PBF

PRODUCTION

LT1120IN8#PBF

PRODUCTION

pdf

PCN22_0172_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download
Oct 12, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1120CS8#PBF

PRODUCTION

LT1120CS8#TRPBF

PRODUCTION

LT1120IS8#PBF

PRODUCTION

LT1120IS8#TRPBF

PRODUCTION

pdf

PCN22_0254_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

LT1120CS8#PBF

PRODUCTION

LT1120CS8#TRPBF

PRODUCTION

LT1120IS8#PBF

PRODUCTION

LT1120IS8#TRPBF

PRODUCTION

pdf

PCN21_0060_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

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