LT1944

PRODUCTION

LT1944

Dual Micropower Step-Up DC/DC Converter

PRODUCTION

Dual Output (5V, 30V) Boost Converter slide

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Part Models 2

1ku List Price Starting From $2.43

Features

Low Quiescent Current:
- 20µA in Active Mode
- <1µA in Shutdown Mode
Operates with V_IN as Low as 1.2V
Low V_CESAT Switch: 250mV at 300mA
Tiny 10-Pin MSOP Package
Uses Small Surface Mount Components
High Output Voltage: Up to 34V

Additional Details

The LT1944 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. Each converter is designed with a 350mA current limit and an input voltage range of 1.2V to 15V, making the LT1944 ideal for a wide variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to 34V to be easily generated in a simple boost topology without the use of costlt transformers. The LT1944's low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.


	Switch Current
LT1944	350mA, 350mA
LT1944-1	100mA, 175mA

Applications

LCD Bias
Handheld Computers
Battery Backup
Digital Cameras

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $2.43

Technical Documents 2

LT1944: Dual Micropower Step-Up DC/DC Converter Data Sheet 08/23/2007

R365 Reliability Data 03/23/2018

Design Resources 2

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
LT1944EMS#PBF	10-Lead MSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LT1944EMS#TRPBF	10-Lead MSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LT1944EMS#PBF
Pin/Package Drawing
10-Lead MSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LT1944EMS#TRPBF
Pin/Package Drawing
10-Lead MSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

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Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LT1944EMS#PBF

PRODUCTION

LT1944EMS#TRPBF

PRODUCTION

pdf

PCN24_0003_Form

xls

Material_Report

pdf

Qualification Results Summary

xlsm

Delta Qualification Matrix

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LT1944EMS#PBF

PRODUCTION

LT1944EMS#TRPBF

PRODUCTION

pdf

PCN20_0130_Form

xls

Material_Report

Filter by Model

Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LT1944EMS#PBF

PRODUCTION

LT1944EMS#TRPBF

PRODUCTION

pdf

PCN24_0003_Form

xls

Material_Report

pdf

Qualification Results Summary

xlsm

Delta Qualification Matrix

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LT1944EMS#PBF

PRODUCTION

LT1944EMS#TRPBF

PRODUCTION

pdf

PCN20_0130_Form

xls

Material_Report

LTspice 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.