
Linear Technology
DESCRIPTION
The LT®1944 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.
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
APPLICATIONS
■ LCD Bias
■ Handheld Computers
■ Battery Backup
■ Digital Cameras