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AnalogicTech Announces High Power DC/DC Boost Converter

Advanced Analogic Technologies Incorporated Press Release - 3/13/2007

DC/DC Boost Converter suits limited-space applications

AAT1210 high power, high current step-up converter

AAT1210 high power,
high current step-up converter

SUNNYVALE, Ca. - Advanced Analogic Technologies Incorporated (AnalogicTech) (NASDAQ:AATI), a developer of power management semiconductors for mobile consumer electronic devices, announced today the AAT1210, a high power, high current step-up converter for thin, small-footprint portable applications. Supplying up to 4.5W of power, this new converter is the first to take a single-cell Lithium-ion battery voltage and boost it to a 5V/900 mA output in a total solution less than 1 mm in height.

"Many portable system designers face the daunting task of creating a high voltage (5V or higher) power bus in systems powered by a single-cell Lithium- ion battery without violating extremely tight space constraints," said Bill Weiss, Product Line Director at AnalogicTech. "The AAT1210 is the industry's first boost converter to supply this high voltage/high current source and still allow designers to use extremely small external components including inductors under 1 mm in height, and thus achieve a total solution less than or equal to 1 mm tall."

Compact Total Solution

Operating from an input range of 2.7 to 5.5V, this DC/DC boost converter features an output voltage which can be set from VIN + 0.5V up to 18V. A hysteretic current mode control circuit simplifies system design by eliminating the need for external compensation. A high 2 MHz switching frequency enables the use of extremely small and low-profile external components and allows designers to build total solutions that consume less PCB area and are less than or equal to 1 mm tall.

To help minimize leakage current common on boost converters, the AAT1210 also features an innovative True Load Disconnect function which isolates the load from the power source when the AAT1210 is turned off. This feature helps the AAT1210 achieve ultra-low sleep mode current consumption without the use of an external MOSFET. In general, the AAT1210 achieves power efficiency levels up to 90% over a wide load range.

The AAT1210 supplies a fixed output voltage which is set using an external resistor divider. As an option, it also offers dynamic voltage scaling in which the output may be adjusted dynamically across a 2.0x range using AnalogicTech's patented single-wire S2Cwire™ (Simple Serial Control) interface.

To ensure reliability, the AAT1210 adds a number of safety features including cycle-by-cycle current limit, integrated soft start, short-circuit and over-temperature protection.

Price and availability

The AAT1210 is specified over the -40 degrees C to +85 degrees C temperature range. It is available in a Pb-free, thermally-enhanced, 16-pin TDFN34 package and sells for $1.31 each in 1000 piece quantities.

About AnalogicTech

Advanced Analogic Technologies Incorporated (AnalogicTech) is a supplier of power management semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, and digital audio 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 is headquartered in Sunnyvale, California, with offices in Beijing, Hong Kong, Japan, Shanghai, Shenzhen, South Korea, Sweden, and Taiwan, as well as a worldwide network of sales representatives and distributors.

For more information, please visit the AnalogicTech website:

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