The high 2MHz switching frequency and completely integrated control circuitry minimize the total solution footprint area while maintaining excellent regulation, ripple, and transient response throughout the full load range. Light load switching frequency modulation and low quiescent current maintain high efficiency performance for light load and sleep mode conditions. With a 1A peak switch current limit, the AAT1265 is capable of delivering 100mA to the load with a single AA cell, up to 250mA from a dual AA cell, or up to 400mA from a single-cell lithium-ion battery. The device has a 1.0V start-up voltage with operation down to 0.8V. The AAT1265 is available in a Pb-free, space-saving 2.0x2.1mm 8-pin SC70JW package and is rated over the -40C to +85C temperature range.