LT3483IS6#TRMPBF

The LT3483/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. A precisely trimmed 10µA feedback current enables one resistor feedback and virtually eliminates feedback loading of the output. The 40V switch enables voltage outputs up to -38V to be generated without the use of costly transformers. The LT3483/LT3483A’s low 300ns off-time permits the use of tiny low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.

Applications

• LCD Bias
• Handheld Computers
• Battery Backup
• Digital Cameras
• OLED Bias

Key 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