AnalogicTech Announces 500mA Step-Down Converter in 2x2x0.55mm Package

Advanced Analogic Technologies Inc. (AnalogicTech) announced the release of its AAT1120, a 500mA step-down converter in a standard 2 x 2 mm, 8-pin STDFN package. Occupying just 4mm2 of PCB area and only 0.55mm tall, this addition to AnalogicTech’s extensive voltage regulation product line is claimed by the company to offer attractive space savings for space-constrained portable applications.

"Higher power density is a key benefit aiding engineers’ ongoing efforts to shrink their product footprint and thickness and thus build smaller micro hard disc drives, handsets, headsets, handheld instruments and other portable devices," noted Bill Weiss, Product Line Director. "By delivering 500mA in a tiny, 2 x 2 x 0.55 mm package, the AAT1120 step-down converter allows designers to build smaller, thinner systems and still provide all the features and current found in larger footprint devices."

Designed for systems powered by a single-cell lithium-ion/polymer battery, 5 or 3.3V VBUS, the AAT1120 operates over a 2.7 to 5.5V input voltage range. Output voltage is adjustable from 0.6V to VIN and supports 100% duty cycle low dropout operation. A 96% efficiency level extends battery life. The converter also offers a low 30µA no load quiescent current. A 1.5 MHz switching frequency permits the use of small external components while keeping switching losses low. To ensure device integrity, the AAT1120 features over-temperature and current-limit protection. Soft-start control limits input surge current and eliminates output voltage overshoot.

The AAT1120 is specified across the -40 to +85°C temperature range and is available in a Pb-free, 8-pin, 2x2 mm STDFN package. It sells for $0.85 each in 1,000 piece quantities.