Demonstration circuits 1211A-A and 1211A-B are high efficiency synchronous boost converters capable of operating with an input voltage range from 0.7V to 5.5V. The 3X2 mm DFN thermally enhanced package with a 1MHz switching frequency and the 1A internal switches provide a very tiny overall solution. The LTC3528/LTC3528B also features output disconnect and the input voltage can be greater or less than the output voltage.