LT1944-1EMS#PBF

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 1.2 to 15 , making it 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 36 switch allows high voltage outputs up to 34 to be easily generated in a simple boost topology without the use of costly transformers. Its 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.

Applications

• LCD Bias
• Handheld Computers
• Battery Backup
• Digital Cameras

Key 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
• Uses Small Surface Mount Components
• High Output Voltage: Up to 34V
• Tiny 10-Pin MSOP Package