SANTA CLARA, Calif., April 15 /PRNewswire-FirstCall/ -- Advanced Analogic Technologies Inc. (AnalogicTech) , a developer of power management semiconductors for mobile consumer electronic devices, announced today the AAT1153, a 1.2 MHz constant frequency, current mode step-down converter capable of delivering up to 2A of output current. Available in a compact, 3x3-mm TDFN package, this new highly efficient synchronous device helps portable system designers meet rising power requirements and still deliver a small, power-efficient solution.
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"Whether building new Portable Navigation Devices (PNDs), Portable Media Players (PMPs) or high-end handsets, today's system designers must constantly add new features and functions that require higher levels of processing power and more current," notes Brandon Pham, Director of Marketing at AnalogicTech. "By delivering up to 2A at high efficiency in a small solution, the AAT1153 step-down converter serves as a key building block in the continual evolution of higher performance, yet compact handheld systems."
High Efficiency Operation
The AAT1153 supplies up to 2A output current from a 2.5V to 5.5V input. Output voltage can range from 0.6V to V(IN). Current mode operation offers excellent line and load transient response.
The new step-down converter extends battery life by running at efficiency levels as high as 95% and can achieve 90% efficiency at its full rated 2A load. It also uses low RDS(ON) internal switches which can run at 100% duty-cycle for low-dropout operation. In addition, light load operation minimizes output ripple for noise sensitive applications.
Using a high 1.2 MHz constant switching frequency, the AAT1153 allows designers to use small external components including lower cost ceramic capacitors. The internal slope compensation setting helps minimize system footprint by allowing the designer to use smaller inductor values.
The AAT1153 offers both short-circuit and over-temperature protection. Soft start circuitry limits current surge at input and eliminates output voltage overshoot. It also offers a low shutdown current of (less than) 1 uA.
Price and Availability
Qualified across the -40 C to +85 C temperature range, the AAT1153 is available in a Pb-free, 10-lead 3x3mm TDFN package. The device sells for $1.15 in 1K quantities.
About AnalogicTech
Advanced Analogic Technologies, Inc. (AnalogicTech) is a supplier of Total Power Management(TM) semiconductor solutions for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, wireless LAN, and personal media players. The company focuses its design and marketing efforts on the application-specific power management needs of consumer, communications, and computing applications in these rapidly evolving devices. AnalogicTech also develops and licenses device, process, package, and application-related technology. AnalogicTech is headquartered in Santa Clara, California and Macau, S.A.R., with offices in China (Beijing, Shanghai and Shenzhen), Hong Kong, Taiwan, Japan, South Korea, Sweden, France and United Kingdom, as well as a worldwide network of sales representatives and distributors. The company is listed on the NASDAQ exchange under the ticker symbol AATI. For more information, please visit the AnalogicTech website: http://www.analogictech.com/. (AnalogicTech - G)
AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
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