Step Down Converters Offer
95% Power Efficiency
|Advanced Analogic Technologies Incorporated Press Release||FlashlightNews.org - 9/05/2007|
New 1.5A and 1.2A Step-Down Converters Reduce Solution Size, Simplify System Design
Advanced Analogic Technologies Inc.
SUNNYVALE, Ca. - Advanced Analogic Technologies Incorporated (AnalogicTech) (NASDAQ:AATI), a developer of power management semiconductors for mobile consumer electronic devices, announced today the AAT1112 and AAT1145, 1.5A and 1.2A constant frequency current mode step-down converters. Available in a small 3x3mm TDFN package, these new current-mode converters require no external compensation components and offer designers highly compact and easy-to-implement solutions.
"Many portable electronics devices contain circuitry that must be powered from a 3.3V rail," notes Bill Weiss, product line director for AnalogicTech. "Unlike comparable voltage-mode step-down converters, the current-mode AAT1112 and AAT1145 enable a Lithium-ion battery input to a 3.3V output at full rated current. These devices also minimize the size of the entire solution without forcing the system designer to iteratively determine the correct external compensation components."
Extended Battery Life
The AAT1112 supplies up to 1.5A output current from a 2.4V to 5.5V input. The AAT1145 supplies up to 1.2A output current from a 2.5V to 5.5V input. Output voltage can be regulated from 0.6V to V(IN). The devices also help extend battery life by running at 100 percent duty cycle for low dropout operation and by offering up to 95 percent power efficiency.
Slope-compensated current mode PWM control enables the use of inductor values as low 1µH while the high 1.5 MHz and 1.4MHz switching frequency enables the use of small external components, resulting in a small total solution.
The AAT1112 and AAT1145 offer integrated soft start and short-circuit and thermal fault protection. They feature a low shutdown current of < 1 µA also.
Price and availability
Rated over the -40 degrees C to +85 degrees C temperature range, the AAT1112 step-down converter comes in both a Pb-free, 3x3mm, 12-lead TDFN package and Pb-free, 2.75x3mm, 12-lead TSOPJW package. It sells for $1.64 each in 1,000 piece quantities in the TDFN package and $1.57 each in 1,000 piece quantities in the TSOPJW package. The AAT1145 step-down converter comes in a Pb-free, 3x3mm, 10-lead TDFN package. It sells for $1.51 each in 1,000 piece quantities.
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, UK, France, and Taiwan, as well as a worldwide network of sales representatives and distributors.
For more information, please visit the AnalogicTech website: www.analogictech.com.
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.