LT1944

PRODUCTION

Dual Micropower Step-Up DC/DC Converter

Part Models: 2
1ku List Price: Starting From $2.43

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Overview

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

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

Part Models: 2
1ku List Price: Starting From $2.43

Documentation

Data Sheet 1

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

Reliability Data 1

R365 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
LT1944EMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1944EMS#TRPBF	10-Lead MSOP	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
LT1944EMS#PBF	PRODUCTION
LT1944EMS#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LT1944EMS#PBF	PRODUCTION
LT1944EMS#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:

LT1944
LT1944-1

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.

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