LT1944-1

PRODUCTION

Dual Micropower Step-Up DC/DC Converter

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

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Part Details

Low Quiescent Current:
- 20µA in Active Mode
- <1µA in Shutdown Mode
Operates with V_IN as Low as 1.2V
Low V_CESAT Switches: 85mV at 70mA
Uses Small Surface Mount Components
High Output Voltage: Up to 34V
Tiny 10-Pin MSOP Package

The LT1944-1 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. One converter is designed with a 100mA current limit and a 400ns off-time; the other with a 175mA current limit and a 1.5µs off-time. The 1.5µs off-time converter is ideal for generating an output voltage that is close to the input voltage (i.e. a Li-Ion to 5V converter, or a two-cell to 3.3V converter). With an input voltage range of 1.2V to 15V, the LT1944-1 is 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. Tiny, low profile inductors and capacitors can be used to minimize footprint and cost in space-conscious portable applications.


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

Applications

Small TFT LCD Panels
Handheld Computers
Battery Backup
Digital Cameras

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

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
LT1944-1EMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1944-1EMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
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
LT1944-1EMS#PBF	PRODUCTION
LT1944-1EMS#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
LT1944-1EMS#PBF	PRODUCTION
LT1944-1EMS#TRPBF	PRODUCTION

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

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.