DESCRIPTION
The LT®1617/LT1617-1 are micropower inverting DC/DC converters in a 5-lead SOT-23 package. The LT1617 is designed for higher power systems with a 350mA current limit and an input voltage range of 1.2V to 15V, whereas the LT1617-1 is intended for lower power and single-cell applications with a 100mA current limit and an extended input voltage range of 1V to 15V. Otherwise, the two devices are functionally equivalent. Both devices feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed offtime 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 1V
■ Low VCESAT Switch: 250mV at 300mA
■ Uses Small Surface Mount Components
■ High Output Voltage: Up to –34V
■ Tiny 5-Lead SOT-23 Package

APPLICATIONS
■ LCD Bias
■ Handheld Computers
■ Battery Backup
■ Digital Cameras