
Linear Technology
DESCRIPTION
The LT®3483/LT3483A are micropower inverting DC/DC converters with integrated Schottky and one resistor feedback. The small package size, high level of integration and use of tiny surface mount components yield a solution size as small as 40mm2. The devices feature a quiescent current of only 40µA at no load, which further reduces to 0.1µA 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
■ Internal 40V Schottky Diode
■ One Resistor Feedback (Other Resistor Inside)
■ Internal 40V, 200mA/400mA Power Switch
■ Generates Regulated Negative Outputs to –38V
■ Low Quiescent Current:
40µA in Active Mode
<1µA in Shutdown Mode
■ Low VCESAT Switch: 200mV at 150mA
■ Wide Input Range: 2.5V to 16V
■ Uses Small Surface Mount Components
■ Output Short-Circuit Protected
■ Available in a 6-Lead SOT-23 (LT3483 Only) and
Low Profile 8-Lead DFN (2mm × 2mm × 0.75mm)
Packages
APPLICATIONS
■ LCD Bias
■ Handheld Computers
■ Battery Backup
■ Digital Cameras
■ OLED Bias