特点
Generates Well-Regulated Positive and Negative Outputs
Low Quiescent Current:
20μA (per Converter) in Active Mode
<1μA in Shutdown Mode
Internal 42V Power Switches
Internal 42V Schottky Diodes
Low V
CESAT
Switch: 180mV at 150mA
Input Voltage Range: 2.4V to 15V
High Output Voltages: Up to ±40V
Low Profile (0.8mm) 3mm x 3mm DFN Package
典型应用
典型应用
描述
The LT?3463/LT3463A are dual micropower DC/DC converters with internal Schottky diodes in a 10-lead 3mm x 3mm DFN package. Negative and positive LT3463 converters have a 250mA current limit. The LT3463A positive converter also has a 250mA limit, while the negative converter has a 400mA limit. Both devices have an input voltage range of 2.4V to 15V, making them ideal for a wide variety of applications. Each converter features a quiescent current of only 20μA, which drops to under 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. The 42V switch enables high voltage outputs up to ±40V to be easily generated without the use of costly transformers. The low 300ns offtime permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.