LT1944 - Dual Micropower Step-Up DC/DC Converter

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.

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

Applications
  • LCD Bias
  • Handheld Computers
  • Battery Backup
  • Digital Cameras
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1944EMS#PBFMS-10E$2.37$2.00
LT1944EMS#TRPBFMS-10E$2.06
Datasheet
Reliability Data
Related Product
LT1944 - Dual Micropower Step-Up DC/DC Converter
R365 - Reliability Data
LT1944 Footprints and Symbols