LT1944-1
FEATURES s Low Quiescent Current: 20µA in Active Mode <1µA in Shutdown Mode s Operates with VIN as Low as 1.2V s Low VCESAT Switches: 85m V at 70m A s Uses Small Surface Mount ponents s High Output Voltage: Up to 34V s Tiny 10-Pin MSOP Package
U APPLICATIO S s Small TFT LCD Panels s Handheld puters s Battery Backup s Digital Cameras
Dual Micropower Step-Up DC/DC Converter
DESCRIPTIO
The LT®1944-1 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. One converter is designed with a 100m A current limit and a 400ns off-time; the other with a 175m A 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....
