LTC1261L

PRODUCTION

Switched Capacitor Regulated Voltage Inverter

Part Models: 24
1ku List Price: Starting From $2.48

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Overview

Regulated Negative Voltage from a Single Positive Supply
REG Pin Indicates Output is in Regulation
Adjustable or Fixed Output Voltages
Output Regulation: ±3.5%
Supply Current: 650µA Typ
Shutdown Mode Drops Supply Current to 5µA
Up to 20mA Output Current
Requires Only Three or Four External Capacitors
Available in MS8 and SO-8 Packages

The LTC1261L is a switched-capacitor voltage inverter designed to provide a regulated negative voltage from a single positive supply. The LTC1261L operates from a single 2.7V to 5.25V supply and provides an adjustable output voltage from -1.23V to ±5V. The LTC1261L-4/LTC1261L-4.5 needs a single 4.5V to 5.25V supply and provides a fixed output voltage of -4V to -4.5V respectively. Three external capacitors are required: a 0.1µF flying capacitor and an input and output bypass capacitors. An optional compensation capacitor at ADJ (COMP) can be used to reduce the output voltage ripple.

Each version of the LTC1261L will supply up to 20mA output current with guaranteed output regulation of ±3.5%. The LTC1261L includes an open-drain REG output that pulls low when the output is within 5% of the set value. Quiescent current is typically 650µA when operating and 5µA in shutdown.

The LTC1261L is available in 8-pin MSOP and SO packages.

Applications

GaAs FET Bias Generators
Negative Supply Generators
Battery-Powered Systems
Single Supply Applications

Part Models: 24
1ku List Price: Starting From $2.48

Documentation

Data Sheet 1

LTC1261L: Switched Capacitor Regulated Voltage Inverter Data Sheet 09/20/2012

Reliability Data 1

R320 Reliability Data 03/23/2018

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
LTC1261LCMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCMS8-4#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCMS8-4#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCMS8-4.5#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCMS8-4.5#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8-4#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8-4#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8-4.5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LCS8-4.5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8-4#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8-4#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8-4.5#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIMS8-4.5#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8-4#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8-4#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8-4.5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1261LIS8-4.5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1261LCMS8#PBF	PRODUCTION
LTC1261LCMS8#TRPBF	PRODUCTION
LTC1261LCMS8-4#PBF	PRODUCTION
LTC1261LCMS8-4#TRPBF	PRODUCTION
LTC1261LCMS8-4.5#PBF	PRODUCTION
LTC1261LCMS8-4.5#TRPBF	PRODUCTION
LTC1261LIMS8#PBF	PRODUCTION
LTC1261LIMS8#TRPBF	PRODUCTION
LTC1261LIMS8-4#PBF	PRODUCTION
LTC1261LIMS8-4#TRPBF	PRODUCTION
LTC1261LIMS8-4.5#PBF	PRODUCTION
LTC1261LIMS8-4.5#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC1261LCMS8#PBF	PRODUCTION
LTC1261LCMS8#TRPBF	PRODUCTION
LTC1261LCMS8-4#PBF	PRODUCTION
LTC1261LCMS8-4#TRPBF	PRODUCTION
LTC1261LCMS8-4.5#PBF	PRODUCTION
LTC1261LCMS8-4.5#TRPBF	PRODUCTION
LTC1261LIMS8#PBF	PRODUCTION
LTC1261LIMS8#TRPBF	PRODUCTION
LTC1261LIMS8-4#PBF	PRODUCTION
LTC1261LIMS8-4#TRPBF	PRODUCTION
LTC1261LIMS8-4.5#PBF	PRODUCTION
LTC1261LIMS8-4.5#TRPBF	PRODUCTION
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LTC1261LCS8#PBF	PRODUCTION
LTC1261LCS8#TRPBF	PRODUCTION
LTC1261LCS8-4#PBF	PRODUCTION
LTC1261LCS8-4#TRPBF	PRODUCTION
LTC1261LCS8-4.5#PBF	PRODUCTION
LTC1261LCS8-4.5#TRPBF	PRODUCTION
LTC1261LIS8#PBF	PRODUCTION
LTC1261LIS8#TRPBF	PRODUCTION
LTC1261LIS8-4#PBF	PRODUCTION
LTC1261LIS8-4#TRPBF	PRODUCTION
LTC1261LIS8-4.5#PBF	PRODUCTION
LTC1261LIS8-4.5#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1261LCS8#PBF	PRODUCTION
LTC1261LCS8#TRPBF	PRODUCTION
LTC1261LCS8-4#PBF	PRODUCTION
LTC1261LCS8-4#TRPBF	PRODUCTION
LTC1261LCS8-4.5#PBF	PRODUCTION
LTC1261LCS8-4.5#TRPBF	PRODUCTION
LTC1261LIS8#PBF	PRODUCTION
LTC1261LIS8#TRPBF	PRODUCTION
LTC1261LIS8-4#PBF	PRODUCTION
LTC1261LIS8-4#TRPBF	PRODUCTION
LTC1261LIS8-4.5#PBF	PRODUCTION
LTC1261LIS8-4.5#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC1261LCS8#PBF	PRODUCTION
LTC1261LCS8#TRPBF	PRODUCTION
LTC1261LCS8-4#PBF	PRODUCTION
LTC1261LCS8-4#TRPBF	PRODUCTION
LTC1261LCS8-4.5#PBF	PRODUCTION
LTC1261LCS8-4.5#TRPBF	PRODUCTION
LTC1261LIS8#PBF	PRODUCTION
LTC1261LIS8#TRPBF	PRODUCTION
LTC1261LIS8-4#PBF	PRODUCTION
LTC1261LIS8-4#TRPBF	PRODUCTION
LTC1261LIS8-4.5#PBF	PRODUCTION
LTC1261LIS8-4.5#TRPBF	PRODUCTION

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

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC1261
LTC1261CS8
LTC1261CS8-4
LTC1261CS8-4.5
LTC1261LCS8
LTC1261LCS8-4
LTC1261LCS8-4.5

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