LT1120

NOT RECOMMENDED FOR NEW DESIGNS

Micropower Regulator with Comparator and Shutdown

Part Models: 6
1ku List Price: Starting From $3.15

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Part Details

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

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

Part Models: 6
1ku List Price: Starting From $3.15

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)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1120CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1120CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1120IN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1120IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1120IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package
		PCN24_0234_Form Material_Report Marking Comparison
LT1120CN8#PBF	PRODUCTION
LT1120IN8#PBF	PRODUCTION
Dec 18, 2023 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package
		PCN22_0241_Form Material_Report Qualification Results Summary
LT1120CN8#PBF	PRODUCTION
LT1120IN8#PBF	PRODUCTION
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]
		PCN22_0172_Form Material_Report Delta Qualification Matrix
LT1120CN8#PBF	PRODUCTION
LT1120IN8#PBF	PRODUCTION
Oct 8, 2024 - 24_0236 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0236_Form Material_Report Marking Comparison Delta Qualification Matrix
LT1120CS8#PBF	PRODUCTION
LT1120CS8#TRPBF	PRODUCTION
LT1120IS8#PBF	PRODUCTION
LT1120IS8#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1120CS8#PBF	PRODUCTION
LT1120CS8#TRPBF	PRODUCTION
LT1120IS8#PBF	PRODUCTION
LT1120IS8#TRPBF	PRODUCTION
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0060_Form Material_Report Delta Qualification Matrix
LT1120CS8#PBF	PRODUCTION
LT1120CS8#TRPBF	PRODUCTION
LT1120IS8#PBF	PRODUCTION
LT1120IS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
LT1762	RECOMMENDED FOR NEW DESIGNS	150mA, Low Noise, LDO Micropower Regulators
LT3082	RECOMMENDED FOR NEW DESIGNS	200mA Single Resistor Low Dropout Linear Regulator

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

Application Note 3

Design Note 1

Hardware Ecosystem

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