LT1945EMS#TRPBF

The LT1945 is a dual micropower 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 LT1945 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 without the use of costly transformers. The LT1945’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.

Applications

• Small TFT LCD Panels
• Handheld Computers
• Battery Backup
• Digital Cameras

Key features

• Generates Well-Regulated Positive and Negative Outputs
• Low Quiescent Current: 2μA in Active Mode (per Converter) <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