LT3483 Datasheet | Linear Technology

Features n Internal 40V Schottky Diode n One Resistor Feedback (Other Resistor Inside) n Internal 40V, 200m A/400m A Power Switch n Generates Regulated Negative Outputs to - 38V n Low Quiescent Current: 40µA in Active Mode <1µA in Shutdown Mode n Low VCESAT Switch: 200m V at 150m A n Wide Input Range: 2.5V to 16V n Uses Small Surface Mount ponents n Output Short-Circuit Protected n Available in a 6-Lead SOT-23 (LT3483 Only) and Low Profile 8-Lead DFN (2mm × 2mm × 0.75mm) Packages APPLICATIONS n LCD Bias n Handheld puters n Battery Backup n Digital Cameras n OLED Bias LT3483/LT3483A Inverting Micropower DC/DC Converters with Schottky 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 ponents 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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Thin SOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7710700. TYPICAL APPLICATION VIN 3.6V 4.7µF 3.6V to - 8V DC/DC Converter 10µH 0.22µF SW VIN D SHDN FB GND 10Ω 5p F 806k VOUT - 8V 25m A 2.2µF 3483...