The LTC3124, a dual-phase, 3-MHz current-mode synchronous boost dc/dc converter with output disconnect and inrush current limiting does its work with a 95% efficiency figure. Dual-phase operation significantly reduces peak inductor and capacitor ripple currents, minimizing component size while delivering lower output ripple versus an equivalent single-phase device. Its internal 2.5A per phase capable switches together deliver 5A of switch current. These 18V switches can deliver output voltages as high as 15V from an input voltage range of 1.8V at start-up (0.5V when running) to 5.5V, making it ideal for supercapacitor-based backup power systems and Li-Ion/Polymer or multi-cell NiMH applications. The LTC3124 delivers up to 1.5A of continuous output current at 12V from a 5V input while synchronous rectification enables the 95% efficiency figure. A datasheet is available at http://www.linear.com/product/LTC3124
Linear Technology Corp.